477749979 has 12 divisors (see below), whose sum is σ = 788666736. Its totient is φ = 272999952.

The previous prime is 477749969. The next prime is 477750017. The reversal of 477749979 is 979947774.

477749979 is a `hidden beast` number, since 4 + 7 + 77 + 499 + 79 = 666.

It is not a de Polignac number, because 477749979 - 2²⁷ = 343532251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 7583333 = 477749979 / (4 + 7 + 7 + 7 + 4 + 9 + 9 + 7 + 9).

It is not an unprimeable number, because it can be changed into a prime (477749969) 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, 3791604 + ... + 3791729.

It is an arithmetic number, because the mean of its divisors is an integer number (65722228).

Almost surely, 2^477749979 is an apocalyptic number.

477749979 is a deficient number, since it is larger than the sum of its proper divisors (310916757).

477749979 is a wasteful number, since it uses less digits than its factorization.

477749979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7583346 (or 7583343 counting only the distinct ones).

The product of its digits is 28005264, while the sum is 63.

The square root of 477749979 is about 21857.4925140099. The cubic root of 477749979 is about 781.7482040916.

It can be divided in two parts, 4777 and 49979, that added together give a square (54756 = 234²).

The spelling of 477749979 in words is "four hundred seventy-seven million, seven hundred forty-nine thousand, nine hundred seventy-nine".