7949393 has 4 divisors (see below), whose sum is σ = 8223540. Its totient is φ = 7675248.

The previous prime is 7949377. The next prime is 7949399. The reversal of 7949393 is 3939497.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5414929 + 2534464 = 2327^2 + 1592^2 .

It is a cyclic number.

It is not a de Polignac number, because 7949393 - 2⁴ = 7949377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7949399) 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 in 3 ways as a sum of consecutive naturals, for example, 137030 + ... + 137087.

It is an arithmetic number, because the mean of its divisors is an integer number (2055885).

Almost surely, 2^7949393 is an apocalyptic number.

It is an amenable number.

7949393 is a deficient number, since it is larger than the sum of its proper divisors (274147).

7949393 is a wasteful number, since it uses less digits than its factorization.

7949393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274146.

The product of its digits is 183708, while the sum is 44.

The square root of 7949393 is about 2819.4667935622. The cubic root of 7949393 is about 199.5773826017.

The spelling of 7949393 in words is "seven million, nine hundred forty-nine thousand, three hundred ninety-three".