479837989 has 16 divisors (see below), whose sum is σ = 519196480. Its totient is φ = 441987840.

The previous prime is 479837923. The next prime is 479837999. The reversal of 479837989 is 989738974.

It is a cyclic number.

It is not a de Polignac number, because 479837989 - 2¹³ = 479829797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 479837989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479837999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195679 + ... + 198115.

It is an arithmetic number, because the mean of its divisors is an integer number (32449780).

Almost surely, 2^479837989 is an apocalyptic number.

It is an amenable number.

479837989 is a deficient number, since it is larger than the sum of its proper divisors (39358491).

479837989 is a wasteful number, since it uses less digits than its factorization.

479837989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740.

The product of its digits is 27433728, while the sum is 64.

The square root of 479837989 is about 21905.2046098638. The cubic root of 479837989 is about 782.8854278181.

The spelling of 479837989 in words is "four hundred seventy-nine million, eight hundred thirty-seven thousand, nine hundred eighty-nine".