7457993 has 2 divisors, whose sum is σ = 7457994. Its totient is φ = 7457992.

The previous prime is 7457987. The next prime is 7457999. The reversal of 7457993 is 3997547.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (7457987) and next prime (7457999).

It can be written as a sum of positive squares in only one way, i.e., 7414729 + 43264 = 2723^2 + 208^2 .

It is an emirp because it is prime and its reverse (3997547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7457993 - 2⁶ = 7457929 is a prime.

It is not a weakly prime, because it can be changed into another prime (7457999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3728996 + 3728997.

It is an arithmetic number, because the mean of its divisors is an integer number (3728997).

Almost surely, 2^7457993 is an apocalyptic number.

It is an amenable number.

7457993 is a deficient number, since it is larger than the sum of its proper divisors (1).

7457993 is an equidigital number, since it uses as much as digits as its factorization.

7457993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 44.

The square root of 7457993 is about 2730.9326245808. The cubic root of 7457993 is about 195.3772490987.

The spelling of 7457993 in words is "seven million, four hundred fifty-seven thousand, nine hundred ninety-three".