10239939 has 20 divisors (see below), whose sum is σ = 15408624. Its totient is φ = 6776784.

The previous prime is 10239923. The next prime is 10239949. The reversal of 10239939 is 93993201.

It is not a de Polignac number, because 10239939 - 2⁴ = 10239923 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (10239949) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13149 + ... + 13905.

Almost surely, 2^10239939 is an apocalyptic number.

10239939 is a deficient number, since it is larger than the sum of its proper divisors (5168685).

10239939 is an equidigital number, since it uses as much as digits as its factorization.

10239939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 10239939 is about 3199.9904687358. The cubic root of 10239939 is about 217.1529781302.

The spelling of 10239939 in words is "ten million, two hundred thirty-nine thousand, nine hundred thirty-nine".