477742721 has 12 divisors (see below), whose sum is σ = 511412880. Its totient is φ = 446172480.

The previous prime is 477742711. The next prime is 477742739. The reversal of 477742721 is 127247774.

It is not a de Polignac number, because 477742721 - 2²⁶ = 410633857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (477742711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31550 + ... + 44168.

It is an arithmetic number, because the mean of its divisors is an integer number (42617740).

Almost surely, 2^477742721 is an apocalyptic number.

It is an amenable number.

477742721 is a deficient number, since it is larger than the sum of its proper divisors (33670159).

477742721 is a wasteful number, since it uses less digits than its factorization.

477742721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12784 (or 12767 counting only the distinct ones).

The product of its digits is 153664, while the sum is 41.

The square root of 477742721 is about 21857.3264833556. The cubic root of 477742721 is about 781.7442452865.

The spelling of 477742721 in words is "four hundred seventy-seven million, seven hundred forty-two thousand, seven hundred twenty-one".