992050021 has 6 divisors (see below), whose sum is σ = 1047011622. Its totient is φ = 939836520.

The previous prime is 992050019. The next prime is 992050027. The reversal of 992050021 is 120050299.

It can be written as a sum of positive squares in only one way, i.e., 912644100 + 79405921 = 30210^2 + 8911^2 .

It is not a de Polignac number, because 992050021 - 2¹ = 992050019 is a prime.

It is a super-2 number, since 2×992050021² = 1968326488332200882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992050027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1373670 + ... + 1374391.

It is an arithmetic number, because the mean of its divisors is an integer number (174501937).

Almost surely, 2^992050021 is an apocalyptic number.

It is an amenable number.

992050021 is a deficient number, since it is larger than the sum of its proper divisors (54961601).

992050021 is a wasteful number, since it uses less digits than its factorization.

992050021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748099 (or 2748080 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 992050021 is about 31496.8255702063. The cubic root of 992050021 is about 997.3429533560.

The spelling of 992050021 in words is "nine hundred ninety-two million, fifty thousand, twenty-one".