7140249979 has 2 divisors, whose sum is σ = 7140249980. Its totient is φ = 7140249978.

The previous prime is 7140249967. The next prime is 7140250001. The reversal of 7140249979 is 9799420417.

It is a weak prime.

It is an emirp because it is prime and its reverse (9799420417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7140249979 - 2²³ = 7131861371 is a prime.

It is not a weakly prime, because it can be changed into another prime (7140249929) 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, 3570124989 + 3570124990.

It is an arithmetic number, because the mean of its divisors is an integer number (3570124990).

Almost surely, 2^7140249979 is an apocalyptic number.

7140249979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7140249979 is an equidigital number, since it uses as much as digits as its factorization.

7140249979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 7140249979 is about 84499.9998757396. Note that the first 3 decimals coincide. The cubic root of 7140249979 is about 1925.6224425770.

The spelling of 7140249979 in words is "seven billion, one hundred forty million, two hundred forty-nine thousand, nine hundred seventy-nine".