20944339 has 6 divisors (see below), whose sum is σ = 22679556. Its totient is φ = 19333080.

The previous prime is 20944309. The next prime is 20944367. The reversal of 20944339 is 93344902.

It is not a de Polignac number, because 20944339 - 2⁵ = 20944307 is a prime.

It is a super-2 number, since 2×20944339² = 877330672293842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20944309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61797 + ... + 62134.

It is an arithmetic number, because the mean of its divisors is an integer number (3779926).

Almost surely, 2^20944339 is an apocalyptic number.

20944339 is a deficient number, since it is larger than the sum of its proper divisors (1735217).

20944339 is a wasteful number, since it uses less digits than its factorization.

20944339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123957 (or 123944 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 20944339 is about 4576.4985523870. The cubic root of 20944339 is about 275.6484488220.

The spelling of 20944339 in words is "twenty million, nine hundred forty-four thousand, three hundred thirty-nine".