477643389 has 4 divisors (see below), whose sum is σ = 636857856. Its totient is φ = 318428924.

The previous prime is 477643363. The next prime is 477643393. The reversal of 477643389 is 983346774.

It is a happy number.

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 not a de Polignac number, because 477643389 - 2⁵ = 477643357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477643189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79607229 + ... + 79607234.

It is an arithmetic number, because the mean of its divisors is an integer number (159214464).

Almost surely, 2^477643389 is an apocalyptic number.

It is an amenable number.

477643389 is a deficient number, since it is larger than the sum of its proper divisors (159214467).

477643389 is a wasteful number, since it uses less digits than its factorization.

477643389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159214466.

The product of its digits is 3048192, while the sum is 51.

The square root of 477643389 is about 21855.0540836668. The cubic root of 477643389 is about 781.6900615886.

The spelling of 477643389 in words is "four hundred seventy-seven million, six hundred forty-three thousand, three hundred eighty-nine".