7499939 has 2 divisors, whose sum is σ = 7499940. Its totient is φ = 7499938.

The previous prime is 7499887. The next prime is 7499969. The reversal of 7499939 is 9399947.

7499939 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7499939 - 2⁸ = 7499683 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7499969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3749969 + 3749970.

It is an arithmetic number, because the mean of its divisors is an integer number (3749970).

Almost surely, 2^7499939 is an apocalyptic number.

7499939 is a deficient number, since it is larger than the sum of its proper divisors (1).

7499939 is an equidigital number, since it uses as much as digits as its factorization.

7499939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 50.

The square root of 7499939 is about 2738.6016504778. The cubic root of 7499939 is about 195.7428513749.

The spelling of 7499939 in words is "seven million, four hundred ninety-nine thousand, nine hundred thirty-nine".