10039813 has 4 divisors (see below), whose sum is σ = 11474080. Its totient is φ = 8605548.

The previous prime is 10039801. The next prime is 10039859. The reversal of 10039813 is 31893001.

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 not a de Polignac number, because 10039813 - 2⁵ = 10039781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10039013) 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, 717123 + ... + 717136.

It is an arithmetic number, because the mean of its divisors is an integer number (2868520).

Almost surely, 2^10039813 is an apocalyptic number.

It is an amenable number.

10039813 is a deficient number, since it is larger than the sum of its proper divisors (1434267).

10039813 is an equidigital number, since it uses as much as digits as its factorization.

10039813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434266.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 10039813 is about 3168.5663950752. The cubic root of 10039813 is about 215.7290054301.

It can be divided in two parts, 1003 and 9813, that added together give a square (10816 = 104²).

The spelling of 10039813 in words is "ten million, thirty-nine thousand, eight hundred thirteen".