479788397 has 4 divisors (see below), whose sum is σ = 523405536. Its totient is φ = 436171260.

The previous prime is 479788369. The next prime is 479788423. The reversal of 479788397 is 793887974.

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 a de Polignac number, because none of the positive numbers 2^k-479788397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479788597) 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, 21808553 + ... + 21808574.

It is an arithmetic number, because the mean of its divisors is an integer number (130851384).

Almost surely, 2^479788397 is an apocalyptic number.

It is an amenable number.

479788397 is a deficient number, since it is larger than the sum of its proper divisors (43617139).

479788397 is a wasteful number, since it uses less digits than its factorization.

479788397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43617138.

The product of its digits is 21337344, while the sum is 62.

The square root of 479788397 is about 21904.0726121879. The cubic root of 479788397 is about 782.8584560813.

The spelling of 479788397 in words is "four hundred seventy-nine million, seven hundred eighty-eight thousand, three hundred ninety-seven".