2799026021 has 16 divisors (see below), whose sum is σ = 3268684800. Its totient is φ = 2369775600.

The previous prime is 2799025967. The next prime is 2799026023. The reversal of 2799026021 is 1206209972.

It is a cyclic number.

It is not a de Polignac number, because 2799026021 - 2¹⁴ = 2799009637 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 (2799026023) 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, 101165 + ... + 125826.

It is an arithmetic number, because the mean of its divisors is an integer number (204292800).

Almost surely, 2^2799026021 is an apocalyptic number.

It is an amenable number.

2799026021 is a deficient number, since it is larger than the sum of its proper divisors (469658779).

2799026021 is a wasteful number, since it uses less digits than its factorization.

2799026021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227080.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 2799026021 is about 52905.8221843305. The cubic root of 2799026021 is about 1409.2963007702.

The spelling of 2799026021 in words is "two billion, seven hundred ninety-nine million, twenty-six thousand, twenty-one".