477716389 has 4 divisors (see below), whose sum is σ = 477760140. Its totient is φ = 477672640.

The previous prime is 477716381. The next prime is 477716429. The reversal of 477716389 is 983617774.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 92968164 + 384748225 = 9642^2 + 19615^2 .

It is a cyclic number.

It is not a de Polignac number, because 477716389 - 2³ = 477716381 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 (477716381) 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, 9597 + ... + 32365.

It is an arithmetic number, because the mean of its divisors is an integer number (119440035).

Almost surely, 2^477716389 is an apocalyptic number.

It is an amenable number.

477716389 is a deficient number, since it is larger than the sum of its proper divisors (43751).

477716389 is a wasteful number, since it uses less digits than its factorization.

477716389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43750.

The product of its digits is 1778112, while the sum is 52.

The square root of 477716389 is about 21856.7241141027. The cubic root of 477716389 is about 781.7298824180.

The spelling of 477716389 in words is "four hundred seventy-seven million, seven hundred sixteen thousand, three hundred eighty-nine".