902799021 has 8 divisors (see below), whose sum is σ = 1203945184. Its totient is φ = 601759440.

The previous prime is 902798989. The next prime is 902799031. The reversal of 902799021 is 120997209.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 902799021 - 2⁵ = 902798989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902799031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4171 + ... + 42696.

It is an arithmetic number, because the mean of its divisors is an integer number (150493148).

Almost surely, 2^902799021 is an apocalyptic number.

It is an amenable number.

902799021 is a deficient number, since it is larger than the sum of its proper divisors (301146163).

902799021 is a wasteful number, since it uses less digits than its factorization.

902799021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53291.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 902799021 is about 30046.6141353731. The cubic root of 902799021 is about 966.4892469605.

The spelling of 902799021 in words is "nine hundred two million, seven hundred ninety-nine thousand, twenty-one".