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390472901 = 7134290911
BaseRepresentation
bin10111010001100…
…010010011000101
31000012202002010022
4113101202103011
51244430113101
6102425104525
712450651650
oct2721422305
91005662108
10390472901
11190459085
12aa928145
1362b87070
1439c04897
1524430a1b
hex174624c5

390472901 has 8 divisors (see below), whose sum is σ = 480582144. Its totient is φ = 308945520.

The previous prime is 390472891. The next prime is 390472913. The reversal of 390472901 is 109274093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 390472901 - 218 = 390210757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390472961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2145365 + ... + 2145546.

It is an arithmetic number, because the mean of its divisors is an integer number (60072768).

Almost surely, 2390472901 is an apocalyptic number.

It is an amenable number.

390472901 is a deficient number, since it is larger than the sum of its proper divisors (90109243).

390472901 is a wasteful number, since it uses less digits than its factorization.

390472901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290931.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 390472901 is about 19760.3871672597. The cubic root of 390472901 is about 730.9095443325.

The spelling of 390472901 in words is "three hundred ninety million, four hundred seventy-two thousand, nine hundred one".

Divisors: 1 7 13 91 4290911 30036377 55781843 390472901