480491999 has 4 divisors (see below), whose sum is σ = 517452936. Its totient is φ = 443531064.

The previous prime is 480491993. The next prime is 480492037. The reversal of 480491999 is 999194084.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 480491999 - 2²⁸ = 212056543 is a prime.

It is a super-2 number, since 2×480491999² = 461745122206032002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 480491999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (480491993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18480449 + ... + 18480474.

It is an arithmetic number, because the mean of its divisors is an integer number (129363234).

Almost surely, 2^480491999 is an apocalyptic number.

480491999 is a deficient number, since it is larger than the sum of its proper divisors (36960937).

480491999 is a wasteful number, since it uses less digits than its factorization.

480491999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36960936.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 480491999 is about 21920.1277140440. The cubic root of 480491999 is about 783.2409522966.

The spelling of 480491999 in words is "four hundred eighty million, four hundred ninety-one thousand, nine hundred ninety-nine".