397253572619 has 4 divisors (see below), whose sum is σ = 397262851296. Its totient is φ = 397244293944.

The previous prime is 397253572567. The next prime is 397253572637. The reversal of 397253572619 is 916275352793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916275352793 = 239 ⋅3833788087.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397253572619 is a prime.

It is a super-2 number, since 2×397253572619² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397253572679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4574819 + ... + 4660844.

It is an arithmetic number, because the mean of its divisors is an integer number (99315712824).

Almost surely, 2^397253572619 is an apocalyptic number.

397253572619 is a deficient number, since it is larger than the sum of its proper divisors (9278677).

397253572619 is an equidigital number, since it uses as much as digits as its factorization.

397253572619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9278676.

The product of its digits is 21432600, while the sum is 59.

The spelling of 397253572619 in words is "three hundred ninety-seven billion, two hundred fifty-three million, five hundred seventy-two thousand, six hundred nineteen".