390423885853 has 2 divisors, whose sum is σ = 390423885854. Its totient is φ = 390423885852.

The previous prime is 390423885809. The next prime is 390423885877. The reversal of 390423885853 is 358588324093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219659067684 + 170764818169 = 468678^2 + 413237^2 .

It is a cyclic number.

It is not a de Polignac number, because 390423885853 - 2¹⁷ = 390423754781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390423885053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195211942926 + 195211942927.

It is an arithmetic number, because the mean of its divisors is an integer number (195211942927).

Almost surely, 2^390423885853 is an apocalyptic number.

It is an amenable number.

390423885853 is a deficient number, since it is larger than the sum of its proper divisors (1).

390423885853 is an equidigital number, since it uses as much as digits as its factorization.

390423885853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 58.

The spelling of 390423885853 in words is "three hundred ninety billion, four hundred twenty-three million, eight hundred eighty-five thousand, eight hundred fifty-three".