479077721 has 4 divisors (see below), whose sum is σ = 489270912. Its totient is φ = 468884532.

The previous prime is 479077693. The next prime is 479077747. The reversal of 479077721 is 127770974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 479077721 - 2¹⁴ = 479061337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479077021) 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, 5096525 + ... + 5096618.

It is an arithmetic number, because the mean of its divisors is an integer number (122317728).

Almost surely, 2^479077721 is an apocalyptic number.

It is an amenable number.

479077721 is a deficient number, since it is larger than the sum of its proper divisors (10193191).

479077721 is a wasteful number, since it uses less digits than its factorization.

479077721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10193190.

The product of its (nonzero) digits is 172872, while the sum is 44.

The square root of 479077721 is about 21887.8441377857. The cubic root of 479077721 is about 782.4717344600.

The spelling of 479077721 in words is "four hundred seventy-nine million, seventy-seven thousand, seven hundred twenty-one".