7440123979 has 2 divisors, whose sum is σ = 7440123980. Its totient is φ = 7440123978.

The previous prime is 7440123953. The next prime is 7440123989. The reversal of 7440123979 is 9793210447.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7440123979 is a prime.

It is not a weakly prime, because it can be changed into another prime (7440123989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3720061989 + 3720061990.

It is an arithmetic number, because the mean of its divisors is an integer number (3720061990).

Almost surely, 2^7440123979 is an apocalyptic number.

7440123979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7440123979 is an equidigital number, since it uses as much as digits as its factorization.

7440123979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 7440123979 is about 86256.1532819543. The cubic root of 7440123979 is about 1952.2108589957.

The spelling of 7440123979 in words is "seven billion, four hundred forty million, one hundred twenty-three thousand, nine hundred seventy-nine".