406620879 has 16 divisors (see below), whose sum is σ = 622732800. Its totient is φ = 231184800.

The previous prime is 406620871. The next prime is 406620883. The reversal of 406620879 is 978026604.

It is not a de Polignac number, because 406620879 - 2³ = 406620871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406620879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406620871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44472 + ... + 52829.

It is an arithmetic number, because the mean of its divisors is an integer number (38920800).

Almost surely, 2^406620879 is an apocalyptic number.

406620879 is a deficient number, since it is larger than the sum of its proper divisors (216111921).

406620879 is a wasteful number, since it uses less digits than its factorization.

406620879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97510.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 406620879 is about 20164.8426475388. The cubic root of 406620879 is about 740.8493285673.

The spelling of 406620879 in words is "four hundred six million, six hundred twenty thousand, eight hundred seventy-nine".