406133979 has 8 divisors (see below), whose sum is σ = 545098752. Its totient is φ = 268962600.

The previous prime is 406133971. The next prime is 406133989. The reversal of 406133979 is 979331604.

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

It is not a de Polignac number, because 406133979 - 2³ = 406133971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406133979.

It is not an unprimeable number, because it can be changed into a prime (406133971) 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, 447819 + ... + 448724.

It is an arithmetic number, because the mean of its divisors is an integer number (68137344).

Almost surely, 2^406133979 is an apocalyptic number.

406133979 is a deficient number, since it is larger than the sum of its proper divisors (138964773).

406133979 is a wasteful number, since it uses less digits than its factorization.

406133979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896697.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 406133979 is about 20152.7660384375. The cubic root of 406133979 is about 740.5535054133.

The spelling of 406133979 in words is "four hundred six million, one hundred thirty-three thousand, nine hundred seventy-nine".