397971982370 has 32 divisors (see below), whose sum is σ = 768088915200. Its totient is φ = 147928225536.

The previous prime is 397971982321. The next prime is 397971982417. The reversal of 397971982370 is 73289179793.

It is a junction number, because it is equal to n+sod(n) for n = 397971982297 and 397971982306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14803100 + ... + 14829959.

It is an arithmetic number, because the mean of its divisors is an integer number (24002778600).

Almost surely, 2^397971982370 is an apocalyptic number.

397971982370 is a deficient number, since it is larger than the sum of its proper divisors (370116932830).

397971982370 is a wasteful number, since it uses less digits than its factorization.

397971982370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29633162.

The product of its (nonzero) digits is 36006768, while the sum is 65.

The spelling of 397971982370 in words is "three hundred ninety-seven billion, nine hundred seventy-one million, nine hundred eighty-two thousand, three hundred seventy".