69938257 has 2 divisors, whose sum is σ = 69938258. Its totient is φ = 69938256.

The previous prime is 69938249. The next prime is 69938273. The reversal of 69938257 is 75283996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49787136 + 20151121 = 7056^2 + 4489^2 .

It is a cyclic number.

It is not a de Polignac number, because 69938257 - 2³ = 69938249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69938257.

It is not a weakly prime, because it can be changed into another prime (69938237) 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 as a sum of consecutive naturals, namely, 34969128 + 34969129.

It is an arithmetic number, because the mean of its divisors is an integer number (34969129).

Almost surely, 2^69938257 is an apocalyptic number.

It is an amenable number.

69938257 is a deficient number, since it is larger than the sum of its proper divisors (1).

69938257 is an equidigital number, since it uses as much as digits as its factorization.

69938257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 49.

The square root of 69938257 is about 8362.9096013290. The cubic root of 69938257 is about 412.0073226618.

The spelling of 69938257 in words is "sixty-nine million, nine hundred thirty-eight thousand, two hundred fifty-seven".