1127649979 has 2 divisors, whose sum is σ = 1127649980. Its totient is φ = 1127649978.

The previous prime is 1127649973. The next prime is 1127649983. The reversal of 1127649979 is 9799467211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1127649979 - 2⁵ = 1127649947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1127649973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563824989 + 563824990.

It is an arithmetic number, because the mean of its divisors is an integer number (563824990).

Almost surely, 2^1127649979 is an apocalyptic number.

1127649979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127649979 is an equidigital number, since it uses as much as digits as its factorization.

1127649979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 55.

The square root of 1127649979 is about 33580.4999813880. The cubic root of 1127649979 is about 1040.8578902012.

The spelling of 1127649979 in words is "one billion, one hundred twenty-seven million, six hundred forty-nine thousand, nine hundred seventy-nine".