390553390397 has 2 divisors, whose sum is σ = 390553390398. Its totient is φ = 390553390396.

The previous prime is 390553390333. The next prime is 390553390429. The reversal of 390553390397 is 793093355093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376616643481 + 13936746916 = 613691^2 + 118054^2 .

It is a cyclic number.

It is not a de Polignac number, because 390553390397 - 2⁶ = 390553390333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390553390307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195276695198 + 195276695199.

It is an arithmetic number, because the mean of its divisors is an integer number (195276695199).

Almost surely, 2^390553390397 is an apocalyptic number.

It is an amenable number.

390553390397 is a deficient number, since it is larger than the sum of its proper divisors (1).

390553390397 is an equidigital number, since it uses as much as digits as its factorization.

390553390397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10333575, while the sum is 56.

The spelling of 390553390397 in words is "three hundred ninety billion, five hundred fifty-three million, three hundred ninety thousand, three hundred ninety-seven".