7931393 has 8 divisors (see below), whose sum is σ = 8239968. Its totient is φ = 7628544.

The previous prime is 7931383. The next prime is 7931411. The reversal of 7931393 is 3931397.

It is a happy number.

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

It is not a de Polignac number, because 7931393 - 2⁸ = 7931137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7931353) 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, 1505 + ... + 4257.

It is an arithmetic number, because the mean of its divisors is an integer number (1029996).

Almost surely, 2^7931393 is an apocalyptic number.

It is an amenable number.

7931393 is a deficient number, since it is larger than the sum of its proper divisors (308575).

7931393 is a wasteful number, since it uses less digits than its factorization.

7931393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863.

The product of its digits is 15309, while the sum is 35.

The square root of 7931393 is about 2816.2728916069. The cubic root of 7931393 is about 199.4266328212.

The spelling of 7931393 in words is "seven million, nine hundred thirty-one thousand, three hundred ninety-three".