990973101 has 32 divisors (see below), whose sum is σ = 1456266240. Its totient is φ = 596623104.

The previous prime is 990973073. The next prime is 990973103. The reversal of 990973101 is 101379099.

It is not a de Polignac number, because 990973101 - 2¹¹ = 990971053 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 990973101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990973103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440686 + ... + 442928.

It is an arithmetic number, because the mean of its divisors is an integer number (45508320).

Almost surely, 2^990973101 is an apocalyptic number.

It is an amenable number.

990973101 is a deficient number, since it is larger than the sum of its proper divisors (465293139).

990973101 is a wasteful number, since it uses less digits than its factorization.

990973101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 990973101 is about 31479.7252370474. The cubic root of 990973101 is about 996.9819341085.

The spelling of 990973101 in words is "nine hundred ninety million, nine hundred seventy-three thousand, one hundred one".