476990893 has 4 divisors (see below), whose sum is σ = 492377728. Its totient is φ = 461604060.

The previous prime is 476990887. The next prime is 476990909. The reversal of 476990893 is 398099674.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-476990893 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 (476990803) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7693371 + ... + 7693432.

It is an arithmetic number, because the mean of its divisors is an integer number (123094432).

Almost surely, 2^476990893 is an apocalyptic number.

It is an amenable number.

476990893 is a deficient number, since it is larger than the sum of its proper divisors (15386835).

476990893 is a wasteful number, since it uses less digits than its factorization.

476990893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15386834.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 476990893 is about 21840.1211764038. The cubic root of 476990893 is about 781.3339506757. Note that the first 3 decimals are identical.

The spelling of 476990893 in words is "four hundred seventy-six million, nine hundred ninety thousand, eight hundred ninety-three".