7917953 has 2 divisors, whose sum is σ = 7917954. Its totient is φ = 7917952.

The previous prime is 7917929. The next prime is 7917967. The reversal of 7917953 is 3597197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7907344 + 10609 = 2812^2 + 103^2 .

It is an emirp because it is prime and its reverse (3597197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7917953 - 2¹⁰ = 7916929 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7917953.

It is not a weakly prime, because it can be changed into another prime (7917253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3958976 + 3958977.

It is an arithmetic number, because the mean of its divisors is an integer number (3958977).

Almost surely, 2^7917953 is an apocalyptic number.

It is an amenable number.

7917953 is a deficient number, since it is larger than the sum of its proper divisors (1).

7917953 is an equidigital number, since it uses as much as digits as its factorization.

7917953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59535, while the sum is 41.

The square root of 7917953 is about 2813.8857475029. The cubic root of 7917953 is about 199.3139241911.

The spelling of 7917953 in words is "seven million, nine hundred seventeen thousand, nine hundred fifty-three".