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69379993 = 71977183
BaseRepresentation
bin1000010001010…
…10011110011001
311211112212110101
410020222132121
5120230124433
610515015401
71501502014
oct410523631
9154485411
1069379993
1136188241
121b29a561
13114b2567
14930037b
15615707d
hex422a799

69379993 has 4 divisors (see below), whose sum is σ = 70357248. Its totient is φ = 68402740.

The previous prime is 69379991. The next prime is 69380011. The reversal of 69379993 is 39997396.

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.

It is a cyclic number.

It is not a de Polignac number, because 69379993 - 21 = 69379991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69379991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488521 + ... + 488662.

It is an arithmetic number, because the mean of its divisors is an integer number (17589312).

Almost surely, 269379993 is an apocalyptic number.

It is an amenable number.

69379993 is a deficient number, since it is larger than the sum of its proper divisors (977255).

69379993 is an equidigital number, since it uses as much as digits as its factorization.

69379993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977254.

The product of its digits is 2480058, while the sum is 55.

The square root of 69379993 is about 8329.4653489885. The cubic root of 69379993 is about 410.9081456177.

The spelling of 69379993 in words is "sixty-nine million, three hundred seventy-nine thousand, nine hundred ninety-three".

Divisors: 1 71 977183 69379993