20412039 has 4 divisors (see below), whose sum is σ = 27216056. Its totient is φ = 13608024.

The previous prime is 20412037. The next prime is 20412047. The reversal of 20412039 is 93021402.

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

It is not a de Polignac number, because 20412039 - 2¹ = 20412037 is a prime.

It is a super-2 number, since 2×20412039² = 833302672275042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412037) 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, 3402004 + ... + 3402009.

It is an arithmetic number, because the mean of its divisors is an integer number (6804014).

Almost surely, 2^20412039 is an apocalyptic number.

20412039 is a deficient number, since it is larger than the sum of its proper divisors (6804017).

20412039 is an equidigital number, since it uses as much as digits as its factorization.

20412039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804016.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20412039 is about 4517.9684593853. The cubic root of 20412039 is about 273.2931815236.

The spelling of 20412039 in words is "twenty million, four hundred twelve thousand, thirty-nine".