39872923 has 2 divisors, whose sum is σ = 39872924. Its totient is φ = 39872922.

The previous prime is 39872879. The next prime is 39872929. The reversal of 39872923 is 32927893.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39872923 - 2⁹ = 39872411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39872923.

It is not a weakly prime, because it can be changed into another prime (39872929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19936461 + 19936462.

It is an arithmetic number, because the mean of its divisors is an integer number (19936462).

Almost surely, 2^39872923 is an apocalyptic number.

39872923 is a deficient number, since it is larger than the sum of its proper divisors (1).

39872923 is an equidigital number, since it uses as much as digits as its factorization.

39872923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 39872923 is about 6314.5010095810. The cubic root of 39872923 is about 341.6326407784.

The spelling of 39872923 in words is "thirty-nine million, eight hundred seventy-two thousand, nine hundred twenty-three".