20046399 has 4 divisors (see below), whose sum is σ = 26728536. Its totient is φ = 13364264.

The previous prime is 20046373. The next prime is 20046401. The reversal of 20046399 is 99364002.

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

It is a cyclic number.

It is not a de Polignac number, because 20046399 - 2⁹ = 20045887 is a prime.

It is a super-2 number, since 2×20046399² = 803716225734402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20047399) 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, 3341064 + ... + 3341069.

It is an arithmetic number, because the mean of its divisors is an integer number (6682134).

Almost surely, 2^20046399 is an apocalyptic number.

20046399 is a deficient number, since it is larger than the sum of its proper divisors (6682137).

20046399 is an equidigital number, since it uses as much as digits as its factorization.

20046399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6682136.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 20046399 is about 4477.3205156656. The cubic root of 20046399 is about 271.6515099795.

The spelling of 20046399 in words is "twenty million, forty-six thousand, three hundred ninety-nine".