38629957 has 2 divisors, whose sum is σ = 38629958. Its totient is φ = 38629956.

The previous prime is 38629919. The next prime is 38629963. The reversal of 38629957 is 75992683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36168196 + 2461761 = 6014^2 + 1569^2 .

It is a cyclic number.

It is not a de Polignac number, because 38629957 - 2²³ = 30241349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38629957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38629057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19314978 + 19314979.

It is an arithmetic number, because the mean of its divisors is an integer number (19314979).

Almost surely, 2^38629957 is an apocalyptic number.

It is an amenable number.

38629957 is a deficient number, since it is larger than the sum of its proper divisors (1).

38629957 is an equidigital number, since it uses as much as digits as its factorization.

38629957 is an evil number, because the sum of its binary digits is even.

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

The square root of 38629957 is about 6215.3002340997. The cubic root of 38629957 is about 338.0451750363.

The spelling of 38629957 in words is "thirty-eight million, six hundred twenty-nine thousand, nine hundred fifty-seven".