999997999490 has 32 divisors (see below), whose sum is σ = 2104979184000. Its totient is φ = 334883049984.

The previous prime is 999997999489. The next prime is 999997999513. The reversal of 999997999490 is 94999799999.

It is a self number, because there is not a number n which added to its sum of digits gives 999997999490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166109615 + ... + 166115634.

It is an arithmetic number, because the mean of its divisors is an integer number (65780599500).

Almost surely, 2^999997999490 is an apocalyptic number.

999997999490 is an abundant number, since it is smaller than the sum of its proper divisors (1104981184510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999997999490 is a wasteful number, since it uses less digits than its factorization.

999997999490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332225306.

The product of its (nonzero) digits is 10847773692, while the sum is 92.

The spelling of 999997999490 in words is "nine hundred ninety-nine billion, nine hundred ninety-seven million, nine hundred ninety-nine thousand, four hundred ninety".