38992087 has 2 divisors, whose sum is σ = 38992088. Its totient is φ = 38992086.

The previous prime is 38992021. The next prime is 38992091. The reversal of 38992087 is 78029983.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38992087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38992007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19496043 + 19496044.

It is an arithmetic number, because the mean of its divisors is an integer number (19496044).

Almost surely, 2^38992087 is an apocalyptic number.

38992087 is a deficient number, since it is larger than the sum of its proper divisors (1).

38992087 is an equidigital number, since it uses as much as digits as its factorization.

38992087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 38992087 is about 6244.3644192183. The cubic root of 38992087 is about 339.0982071465.

The spelling of 38992087 in words is "thirty-eight million, nine hundred ninety-two thousand, eighty-seven".