397922857453 has 32 divisors (see below), whose sum is σ = 488263248000. Its totient is φ = 319589867520.

The previous prime is 397922857441. The next prime is 397922857457. The reversal of 397922857453 is 354758229793.

It is not a de Polignac number, because 397922857453 - 2²¹ = 397920760301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397922857457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126468 + ... + 901021.

It is an arithmetic number, because the mean of its divisors is an integer number (15258226500).

Almost surely, 2^397922857453 is an apocalyptic number.

It is an amenable number.

397922857453 is a deficient number, since it is larger than the sum of its proper divisors (90340390547).

397922857453 is a wasteful number, since it uses less digits than its factorization.

397922857453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027645.

The product of its digits is 114307200, while the sum is 64.

The spelling of 397922857453 in words is "three hundred ninety-seven billion, nine hundred twenty-two million, eight hundred fifty-seven thousand, four hundred fifty-three".