406314778 has 16 divisors (see below), whose sum is σ = 624966696. Its totient is φ = 198051840.

The previous prime is 406314767. The next prime is 406314781. The reversal of 406314778 is 877413604.

It can be written as a sum of positive squares in 4 ways, for example, as 64915249 + 341399529 = 8057^2 + 18477^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 406314778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951 + ... + 28522.

Almost surely, 2^406314778 is an apocalyptic number.

406314778 is a deficient number, since it is larger than the sum of its proper divisors (218651918).

406314778 is a wasteful number, since it uses less digits than its factorization.

406314778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29649.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 406314778 is about 20157.2512511007. The cubic root of 406314778 is about 740.6633800498.

The spelling of 406314778 in words is "four hundred six million, three hundred fourteen thousand, seven hundred seventy-eight".