20792489 has 4 divisors (see below), whose sum is σ = 20806656. Its totient is φ = 20778324.

The previous prime is 20792477. The next prime is 20792501. The reversal of 20792489 is 98429702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20792477) and next prime (20792501).

It is a cyclic number.

It is not a de Polignac number, because 20792489 - 2²⁴ = 4015273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20792419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4589 + ... + 7914.

It is an arithmetic number, because the mean of its divisors is an integer number (5201664).

Almost surely, 2^20792489 is an apocalyptic number.

It is an amenable number.

20792489 is a deficient number, since it is larger than the sum of its proper divisors (14167).

20792489 is a wasteful number, since it uses less digits than its factorization.

20792489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14166.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 20792489 is about 4559.8781781973. The cubic root of 20792489 is about 274.9806664094.

The spelling of 20792489 in words is "twenty million, seven hundred ninety-two thousand, four hundred eighty-nine".