397075975406 has 64 divisors (see below), whose sum is σ = 711950964480. Its totient is φ = 163957839360.

The previous prime is 397075975397. The next prime is 397075975433. The reversal of 397075975406 is 604579570793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48878861 + ... + 48886983.

It is an arithmetic number, because the mean of its divisors is an integer number (11124233820).

Almost surely, 2^397075975406 is an apocalyptic number.

397075975406 is a deficient number, since it is larger than the sum of its proper divisors (314874989074).

397075975406 is a wasteful number, since it uses less digits than its factorization.

397075975406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12689.

The product of its (nonzero) digits is 50009400, while the sum is 62.

The spelling of 397075975406 in words is "three hundred ninety-seven billion, seventy-five million, nine hundred seventy-five thousand, four hundred six".