990752901 has 16 divisors (see below), whose sum is σ = 1373587968. Its totient is φ = 634521600.

The previous prime is 990752887. The next prime is 990752923. The reversal of 990752901 is 109257099.

It is not a de Polignac number, because 990752901 - 2⁷ = 990752773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990752951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26140 + ... + 51621.

It is an arithmetic number, because the mean of its divisors is an integer number (85849248).

Almost surely, 2^990752901 is an apocalyptic number.

It is an amenable number.

990752901 is a deficient number, since it is larger than the sum of its proper divisors (382835067).

990752901 is a wasteful number, since it uses less digits than its factorization.

990752901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77932.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 990752901 is about 31476.2275535046. The cubic root of 990752901 is about 996.9080835723.

The spelling of 990752901 in words is "nine hundred ninety million, seven hundred fifty-two thousand, nine hundred one".