408020013 has 12 divisors (see below), whose sum is σ = 589537728. Its totient is φ = 271932360.

The previous prime is 408019993. The next prime is 408020051. The reversal of 408020013 is 310020804.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-408020013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408040013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52978 + ... + 60188.

It is an arithmetic number, because the mean of its divisors is an integer number (49128144).

Almost surely, 2^408020013 is an apocalyptic number.

It is an amenable number.

408020013 is a deficient number, since it is larger than the sum of its proper divisors (181517715).

408020013 is a wasteful number, since it uses less digits than its factorization.

408020013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13504 (or 13501 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 408020013 is about 20199.5052662188. The cubic root of 408020013 is about 741.6980805839.

Adding to 408020013 its reverse (310020804), we get a palindrome (718040817).

The spelling of 408020013 in words is "four hundred eight million, twenty thousand, thirteen".