7915969 has 2 divisors, whose sum is σ = 7915970. Its totient is φ = 7915968.

The previous prime is 7915903. The next prime is 7915987. The reversal of 7915969 is 9695197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6066369 + 1849600 = 2463^2 + 1360^2 .

It is an emirp because it is prime and its reverse (9695197) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7915969 is a prime.

It is a super-2 number, since 2×7915969² = 125325130417922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7915069) 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, 3957984 + 3957985.

It is an arithmetic number, because the mean of its divisors is an integer number (3957985).

Almost surely, 2^7915969 is an apocalyptic number.

It is an amenable number.

7915969 is a deficient number, since it is larger than the sum of its proper divisors (1).

7915969 is an equidigital number, since it uses as much as digits as its factorization.

7915969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 46.

The square root of 7915969 is about 2813.5331880040. The cubic root of 7915969 is about 199.2972754495.

The spelling of 7915969 in words is "seven million, nine hundred fifteen thousand, nine hundred sixty-nine".