1241479979 has 2 divisors, whose sum is σ = 1241479980. Its totient is φ = 1241479978.

The previous prime is 1241479951. The next prime is 1241480017. The reversal of 1241479979 is 9799741421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241479979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1241479979.

It is not a weakly prime, because it can be changed into another prime (1241479919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620739989 + 620739990.

It is an arithmetic number, because the mean of its divisors is an integer number (620739990).

Almost surely, 2^1241479979 is an apocalyptic number.

1241479979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241479979 is an equidigital number, since it uses as much as digits as its factorization.

1241479979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 53.

The square root of 1241479979 is about 35234.6417464404. The cubic root of 1241479979 is about 1074.7643194172.

The spelling of 1241479979 in words is "one billion, two hundred forty-one million, four hundred seventy-nine thousand, nine hundred seventy-nine".