39957023 has 2 divisors, whose sum is σ = 39957024. Its totient is φ = 39957022.

The previous prime is 39956993. The next prime is 39957031. The reversal of 39957023 is 32075993.

39957023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (32075993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39957023 - 2¹⁰ = 39955999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39957223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19978511 + 19978512.

It is an arithmetic number, because the mean of its divisors is an integer number (19978512).

Almost surely, 2^39957023 is an apocalyptic number.

39957023 is a deficient number, since it is larger than the sum of its proper divisors (1).

39957023 is an equidigital number, since it uses as much as digits as its factorization.

39957023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 39957023 is about 6321.1567770464. The cubic root of 39957023 is about 341.8726627159.

The spelling of 39957023 in words is "thirty-nine million, nine hundred fifty-seven thousand, twenty-three".