397786279444 has 24 divisors (see below), whose sum is σ = 743285188800. Its totient is φ = 185821293504.

The previous prime is 397786279441. The next prime is 397786279459. The reversal of 397786279444 is 444972687793.

It is a super-2 number, since 2×397786279444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397786279441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50272369 + ... + 50280280.

It is an arithmetic number, because the mean of its divisors is an integer number (30970216200).

Almost surely, 2^397786279444 is an apocalyptic number.

It is an amenable number.

397786279444 is a deficient number, since it is larger than the sum of its proper divisors (345498909356).

397786279444 is a wasteful number, since it uses less digits than its factorization.

397786279444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100552719 (or 100552717 counting only the distinct ones).

The product of its digits is 512096256, while the sum is 70.

The spelling of 397786279444 in words is "three hundred ninety-seven billion, seven hundred eighty-six million, two hundred seventy-nine thousand, four hundred forty-four".