7287979 has 2 divisors, whose sum is σ = 7287980. Its totient is φ = 7287978.

The previous prime is 7287953. The next prime is 7287983. The reversal of 7287979 is 9797827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7287979 - 2⁵ = 7287947 is a prime.

It is a super-2 number, since 2×7287979² = 106229275808882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7287919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643989 + 3643990.

It is an arithmetic number, because the mean of its divisors is an integer number (3643990).

Almost surely, 2^7287979 is an apocalyptic number.

7287979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7287979 is an equidigital number, since it uses as much as digits as its factorization.

7287979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 49.

The square root of 7287979 is about 2699.6257147983. The cubic root of 7287979 is about 193.8812022883.

The spelling of 7287979 in words is "seven million, two hundred eighty-seven thousand, nine hundred seventy-nine".