990781962 has 16 divisors (see below), whose sum is σ = 1988879232. Its totient is φ = 329041440.

The previous prime is 990781943. The next prime is 990781993. The reversal of 990781962 is 269187099.

It is a happy number.

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, 303043 + ... + 306294.

It is an arithmetic number, because the mean of its divisors is an integer number (124304952).

Almost surely, 2^990781962 is an apocalyptic number.

990781962 is an abundant number, since it is smaller than the sum of its proper divisors (998097270).

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

990781962 is a wasteful number, since it uses less digits than its factorization.

990781962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609613.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 990781962 is about 31476.6891842201. The cubic root of 990781962 is about 996.9178306588.

The spelling of 990781962 in words is "nine hundred ninety million, seven hundred eighty-one thousand, nine hundred sixty-two".