38874391 has 2 divisors, whose sum is σ = 38874392. Its totient is φ = 38874390.

The previous prime is 38874379. The next prime is 38874397. The reversal of 38874391 is 19347883.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38874391 - 2²³ = 30485783 is a prime.

It is a super-2 number, since 2×38874391² = 3022436551241762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38874397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19437195 + 19437196.

It is an arithmetic number, because the mean of its divisors is an integer number (19437196).

Almost surely, 2^38874391 is an apocalyptic number.

38874391 is a deficient number, since it is larger than the sum of its proper divisors (1).

38874391 is an equidigital number, since it uses as much as digits as its factorization.

38874391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 38874391 is about 6234.9331191281. The cubic root of 38874391 is about 338.7566786536.

The spelling of 38874391 in words is "thirty-eight million, eight hundred seventy-four thousand, three hundred ninety-one".