7239939 has 8 divisors (see below), whose sum is σ = 11032320. Its totient is φ = 4137096.

The previous prime is 7239923. The next prime is 7239961. The reversal of 7239939 is 9399327.

7239939 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7239939 - 2⁴ = 7239923 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 7239939.

It is not an unprimeable number, because it can be changed into a prime (7239919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172359 + ... + 172400.

It is an arithmetic number, because the mean of its divisors is an integer number (1379040).

Almost surely, 2^7239939 is an apocalyptic number.

7239939 is a deficient number, since it is larger than the sum of its proper divisors (3792381).

7239939 is a wasteful number, since it uses less digits than its factorization.

7239939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344769.

The product of its digits is 91854, while the sum is 42.

The square root of 7239939 is about 2690.7134741551. The cubic root of 7239939 is about 193.4542621033.

The spelling of 7239939 in words is "seven million, two hundred thirty-nine thousand, nine hundred thirty-nine".