479747993 has 8 divisors (see below), whose sum is σ = 482970312. Its totient is φ = 476534016.

The previous prime is 479747977. The next prime is 479748001. The reversal of 479747993 is 399747974.

It can be written as a sum of positive squares in 4 ways, for example, as 342694144 + 137053849 = 18512^2 + 11707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 479747993 - 2⁴ = 479747977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479747953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147521 + ... + 150737.

It is an arithmetic number, because the mean of its divisors is an integer number (60371289).

Almost surely, 2^479747993 is an apocalyptic number.

It is an amenable number.

479747993 is a deficient number, since it is larger than the sum of its proper divisors (3222319).

479747993 is a wasteful number, since it uses less digits than its factorization.

479747993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171.

The product of its digits is 12002256, while the sum is 59.

The square root of 479747993 is about 21903.1502985301. The cubic root of 479747993 is about 782.8364800733.

The spelling of 479747993 in words is "four hundred seventy-nine million, seven hundred forty-seven thousand, nine hundred ninety-three".