406790397 has 64 divisors (see below), whose sum is σ = 694310400. Its totient is φ = 233418240.

The previous prime is 406790393. The next prime is 406790471. The reversal of 406790397 is 793097604.

It is not a de Polignac number, because 406790397 - 2² = 406790393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406790393) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 330379 + ... + 331607.

It is an arithmetic number, because the mean of its divisors is an integer number (10848600).

Almost surely, 2^406790397 is an apocalyptic number.

It is an amenable number.

406790397 is a deficient number, since it is larger than the sum of its proper divisors (287520003).

406790397 is a wasteful number, since it uses less digits than its factorization.

406790397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 406790397 is about 20169.0455153436. The cubic root of 406790397 is about 740.9522662625.

The spelling of 406790397 in words is "four hundred six million, seven hundred ninety thousand, three hundred ninety-seven".