477987455 has 16 divisors (see below), whose sum is σ = 633273984. Its totient is φ = 343435680.

The previous prime is 477987451. The next prime is 477987457. The reversal of 477987455 is 554789774.

It is not a de Polignac number, because 477987455 - 2² = 477987451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 477987455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477987451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47789 + ... + 56918.

It is an arithmetic number, because the mean of its divisors is an integer number (39579624).

Almost surely, 2^477987455 is an apocalyptic number.

477987455 is a deficient number, since it is larger than the sum of its proper divisors (155286529).

477987455 is a wasteful number, since it uses less digits than its factorization.

477987455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104806.

The product of its digits is 9878400, while the sum is 56.

The square root of 477987455 is about 21862.9242097209. The cubic root of 477987455 is about 781.8777109420.

The spelling of 477987455 in words is "four hundred seventy-seven million, nine hundred eighty-seven thousand, four hundred fifty-five".