390533945953 has 2 divisors, whose sum is σ = 390533945954. Its totient is φ = 390533945952.

The previous prime is 390533945951. The next prime is 390533946053. The reversal of 390533945953 is 359549335093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333538590784 + 56995355169 = 577528^2 + 238737^2 .

It is a cyclic number.

It is not a de Polignac number, because 390533945953 - 2¹ = 390533945951 is a prime.

Together with 390533945951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (390533945951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195266972976 + 195266972977.

It is an arithmetic number, because the mean of its divisors is an integer number (195266972977).

Almost surely, 2^390533945953 is an apocalyptic number.

It is an amenable number.

390533945953 is a deficient number, since it is larger than the sum of its proper divisors (1).

390533945953 is an equidigital number, since it uses as much as digits as its factorization.

390533945953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29524500, while the sum is 58.

The spelling of 390533945953 in words is "three hundred ninety billion, five hundred thirty-three million, nine hundred forty-five thousand, nine hundred fifty-three".