990545946 has 16 divisors (see below), whose sum is σ = 2133483744. Its totient is φ = 304783344.

The previous prime is 990545939. The next prime is 990545977. The reversal of 990545946 is 649545099.

It is a super-2 number, since 2×990545946² = 1962362542274069832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6349576 + ... + 6349731.

It is an arithmetic number, because the mean of its divisors is an integer number (133342734).

Almost surely, 2^990545946 is an apocalyptic number.

990545946 is an abundant number, since it is smaller than the sum of its proper divisors (1142937798).

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

990545946 is a wasteful number, since it uses less digits than its factorization.

990545946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12699325.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The square root of 990545946 is about 31472.9399008100. The cubic root of 990545946 is about 996.8386651602.

The spelling of 990545946 in words is "nine hundred ninety million, five hundred forty-five thousand, nine hundred forty-six".