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90350369 = 503179623
BaseRepresentation
bin1010110001010…
…10001100100001
320022000021101222
411120222030201
5141112202434
612544304425
72144652104
oct530521441
9208007358
1090350369
114700062a
1226312115
1315945575
14bddc73b
157dea72e
hex562a321

90350369 has 4 divisors (see below), whose sum is σ = 90530496. Its totient is φ = 90170244.

The previous prime is 90350363. The next prime is 90350387. The reversal of 90350369 is 96305309.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96305309 = 103935003.

It is a cyclic number.

It is not a de Polignac number, because 90350369 - 216 = 90284833 is a prime.

It is a super-2 number, since 2×903503692 = 16326378356872322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90350363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89309 + ... + 90314.

It is an arithmetic number, because the mean of its divisors is an integer number (22632624).

Almost surely, 290350369 is an apocalyptic number.

It is an amenable number.

90350369 is a deficient number, since it is larger than the sum of its proper divisors (180127).

90350369 is a wasteful number, since it uses less digits than its factorization.

90350369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180126.

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 90350369 is about 9505.2811110456. The cubic root of 90350369 is about 448.7212569429.

The spelling of 90350369 in words is "ninety million, three hundred fifty thousand, three hundred sixty-nine".

Divisors: 1 503 179623 90350369