990433573874 has 8 divisors (see below), whose sum is σ = 1485655223340. Its totient is φ = 495215166096.

The previous prime is 990433573867. The next prime is 990433573907. The reversal of 990433573874 is 478375334099.

It can be written as a sum of positive squares in 2 ways, for example, as 959336014849 + 31097559025 = 979457^2 + 176345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210752 + ... + 1423124.

Almost surely, 2^990433573874 is an apocalyptic number.

990433573874 is a deficient number, since it is larger than the sum of its proper divisors (495221649466).

990433573874 is a wasteful number, since it uses less digits than its factorization.

990433573874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620844.

The product of its (nonzero) digits is 68584320, while the sum is 62.

The spelling of 990433573874 in words is "nine hundred ninety billion, four hundred thirty-three million, five hundred seventy-three thousand, eight hundred seventy-four".