38889031 has 2 divisors, whose sum is σ = 38889032. Its totient is φ = 38889030.

The previous prime is 38889023. The next prime is 38889041. The reversal of 38889031 is 13098883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38889031 - 2³ = 38889023 is a prime.

It is a super-2 number, since 2×38889031² = 3024713464237922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38889001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19444515 + 19444516.

It is an arithmetic number, because the mean of its divisors is an integer number (19444516).

Almost surely, 2^38889031 is an apocalyptic number.

38889031 is a deficient number, since it is larger than the sum of its proper divisors (1).

38889031 is an equidigital number, since it uses as much as digits as its factorization.

38889031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 38889031 is about 6236.1070388504. The cubic root of 38889031 is about 338.7991982936.

The spelling of 38889031 in words is "thirty-eight million, eight hundred eighty-nine thousand, thirty-one".