479228921 has 8 divisors (see below), whose sum is σ = 493943304. Its totient is φ = 464607360.

The previous prime is 479228909. The next prime is 479228933. The reversal of 479228921 is 129822974.

It is an interprime number because it is at equal distance from previous prime (479228909) and next prime (479228933).

It can be written as a sum of positive squares in 4 ways, for example, as 201640000 + 277588921 = 14200^2 + 16661^2 .

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 479228921 - 2¹⁴ = 479212537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479228021) 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, 12650 + ... + 33443.

It is an arithmetic number, because the mean of its divisors is an integer number (61742913).

Almost surely, 2^479228921 is an apocalyptic number.

It is an amenable number.

479228921 is a deficient number, since it is larger than the sum of its proper divisors (14714383).

479228921 is a wasteful number, since it uses less digits than its factorization.

479228921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46411.

The product of its digits is 145152, while the sum is 44.

The square root of 479228921 is about 21891.2978372686. The cubic root of 479228921 is about 782.5540435000.

The spelling of 479228921 in words is "four hundred seventy-nine million, two hundred twenty-eight thousand, nine hundred twenty-one".