38975791 has 2 divisors, whose sum is σ = 38975792. Its totient is φ = 38975790.

The previous prime is 38975779. The next prime is 38975801. The reversal of 38975791 is 19757983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38975791 - 2¹⁷ = 38844719 is a prime.

It is a super-2 number, since 2×38975791² = 3038224568151362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38975701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19487895 + 19487896.

It is an arithmetic number, because the mean of its divisors is an integer number (19487896).

Almost surely, 2^38975791 is an apocalyptic number.

38975791 is a deficient number, since it is larger than the sum of its proper divisors (1).

38975791 is an equidigital number, since it uses as much as digits as its factorization.

38975791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 49.

The square root of 38975791 is about 6243.0594262749. The cubic root of 38975791 is about 339.0509606852.

The spelling of 38975791 in words is "thirty-eight million, nine hundred seventy-five thousand, seven hundred ninety-one".