397640841932 has 12 divisors (see below), whose sum is σ = 697442292456. Its totient is φ = 198371615520.

The previous prime is 397640841841. The next prime is 397640841943. The reversal of 397640841932 is 239148046793.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112199369 + ... + 112202912.

It is an arithmetic number, because the mean of its divisors is an integer number (58120191038).

Almost surely, 2^397640841932 is an apocalyptic number.

It is an amenable number.

397640841932 is a deficient number, since it is larger than the sum of its proper divisors (299801450524).

397640841932 is a wasteful number, since it uses less digits than its factorization.

397640841932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224402728 (or 224402726 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 397640841932 in words is "three hundred ninety-seven billion, six hundred forty million, eight hundred forty-one thousand, nine hundred thirty-two".