406745679 has 8 divisors (see below), whose sum is σ = 542795392. Its totient is φ = 270929880.

The previous prime is 406745657. The next prime is 406745681. The reversal of 406745679 is 976547604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 406745679 - 2²⁴ = 389968463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406745609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54379 + ... + 61404.

It is an arithmetic number, because the mean of its divisors is an integer number (67849424).

Almost surely, 2^406745679 is an apocalyptic number.

406745679 is a deficient number, since it is larger than the sum of its proper divisors (136049713).

406745679 is a wasteful number, since it uses less digits than its factorization.

406745679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116957.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 406745679 is about 20167.9369048993. The cubic root of 406745679 is about 740.9251145910.

The spelling of 406745679 in words is "four hundred six million, seven hundred forty-five thousand, six hundred seventy-nine".