476978939 has 4 divisors (see below), whose sum is σ = 477101640. Its totient is φ = 476856240.

The previous prime is 476978933. The next prime is 476978969. The reversal of 476978939 is 939879674.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 476978939 - 2¹² = 476974843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (476978933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55322 + ... + 63359.

It is an arithmetic number, because the mean of its divisors is an integer number (119275410).

Almost surely, 2^476978939 is an apocalyptic number.

476978939 is a deficient number, since it is larger than the sum of its proper divisors (122701).

476978939 is a wasteful number, since it uses less digits than its factorization.

476978939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122700.

The product of its digits is 20575296, while the sum is 62.

The square root of 476978939 is about 21839.8475040464. The cubic root of 476978939 is about 781.3274235461.

The spelling of 476978939 in words is "four hundred seventy-six million, nine hundred seventy-eight thousand, nine hundred thirty-nine".