397426073 has 12 divisors (see below), whose sum is σ = 438204144. Its totient is φ = 360168600.

The previous prime is 397426067. The next prime is 397426087. The reversal of 397426073 is 370624793.

It is not a de Polignac number, because 397426073 - 2⁶ = 397426009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397426073.

It is not an unprimeable number, because it can be changed into a prime (397426373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35090 + ... + 45012.

It is an arithmetic number, because the mean of its divisors is an integer number (36517012).

Almost surely, 2^397426073 is an apocalyptic number.

It is an amenable number.

397426073 is a deficient number, since it is larger than the sum of its proper divisors (40778071).

397426073 is a wasteful number, since it uses less digits than its factorization.

397426073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10276 (or 10265 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 41.

The square root of 397426073 is about 19935.5479734067. The cubic root of 397426073 is about 735.2224929949. Note that the first 3 decimals are identical.

The spelling of 397426073 in words is "three hundred ninety-seven million, four hundred twenty-six thousand, seventy-three".