20339499 has 4 divisors (see below), whose sum is σ = 27119336. Its totient is φ = 13559664.

The previous prime is 20339491. The next prime is 20339533. The reversal of 20339499 is 99493302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20339499 - 2³ = 20339491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20339491) 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, 3389914 + ... + 3389919.

It is an arithmetic number, because the mean of its divisors is an integer number (6779834).

Almost surely, 2^20339499 is an apocalyptic number.

20339499 is a deficient number, since it is larger than the sum of its proper divisors (6779837).

20339499 is an equidigital number, since it uses as much as digits as its factorization.

20339499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6779836.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 20339499 is about 4509.9333697961. The cubic root of 20339499 is about 272.9690555166.

The spelling of 20339499 in words is "twenty million, three hundred thirty-nine thousand, four hundred ninety-nine".