38938957 has 2 divisors, whose sum is σ = 38938958. Its totient is φ = 38938956.

The previous prime is 38938943. The next prime is 38938969. The reversal of 38938957 is 75983983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31573161 + 7365796 = 5619^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 38938957 - 2²³ = 30550349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38938987) 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, 19469478 + 19469479.

It is an arithmetic number, because the mean of its divisors is an integer number (19469479).

Almost surely, 2^38938957 is an apocalyptic number.

It is an amenable number.

38938957 is a deficient number, since it is larger than the sum of its proper divisors (1).

38938957 is an equidigital number, since it uses as much as digits as its factorization.

38938957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 38938957 is about 6240.1087330270. The cubic root of 38938957 is about 338.9441205250.

The spelling of 38938957 in words is "thirty-eight million, nine hundred thirty-eight thousand, nine hundred fifty-seven".