38974391 has 2 divisors, whose sum is σ = 38974392. Its totient is φ = 38974390.

The previous prime is 38974363. The next prime is 38974399. The reversal of 38974391 is 19347983.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38974391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38974399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19487195 + 19487196.

It is an arithmetic number, because the mean of its divisors is an integer number (19487196).

Almost surely, 2^38974391 is an apocalyptic number.

38974391 is a deficient number, since it is larger than the sum of its proper divisors (1).

38974391 is an equidigital number, since it uses as much as digits as its factorization.

38974391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 38974391 is about 6242.9473007547. The cubic root of 38974391 is about 339.0469010967.

The spelling of 38974391 in words is "thirty-eight million, nine hundred seventy-four thousand, three hundred ninety-one".