938876857 has 2 divisors, whose sum is σ = 938876858. Its totient is φ = 938876856.

The previous prime is 938876801. The next prime is 938876879. The reversal of 938876857 is 758678839.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667912336 + 270964521 = 25844^2 + 16461^2 .

It is a cyclic number.

It is not a de Polignac number, because 938876857 - 2¹¹ = 938874809 is a prime.

It is a super-2 number, since 2×938876857² = 1762979505220396898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 938876795 and 938876804.

It is not a weakly prime, because it can be changed into another prime (938876557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469438428 + 469438429.

It is an arithmetic number, because the mean of its divisors is an integer number (469438429).

Almost surely, 2^938876857 is an apocalyptic number.

It is an amenable number.

938876857 is a deficient number, since it is larger than the sum of its proper divisors (1).

938876857 is an equidigital number, since it uses as much as digits as its factorization.

938876857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 61.

The square root of 938876857 is about 30641.0975162444. The cubic root of 938876857 is about 979.1958059627.

The spelling of 938876857 in words is "nine hundred thirty-eight million, eight hundred seventy-six thousand, eight hundred fifty-seven".