20914879 has 16 divisors (see below), whose sum is σ = 23327136. Its totient is φ = 18662400.

The previous prime is 20914867. The next prime is 20914891. The reversal of 20914879 is 97841902.

It is an interprime number because it is at equal distance from previous prime (20914867) and next prime (20914891).

It is a cyclic number.

It is not a de Polignac number, because 20914879 - 2¹¹ = 20912831 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 (20914279) 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, 25384 + ... + 26194.

It is an arithmetic number, because the mean of its divisors is an integer number (1457946).

Almost surely, 2^20914879 is an apocalyptic number.

20914879 is a deficient number, since it is larger than the sum of its proper divisors (2412257).

20914879 is a wasteful number, since it uses less digits than its factorization.

20914879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 20914879 is about 4573.2788019101. The cubic root of 20914879 is about 275.5191471569.

The spelling of 20914879 in words is "twenty million, nine hundred fourteen thousand, eight hundred seventy-nine".