1149279749 has 2 divisors, whose sum is σ = 1149279750. Its totient is φ = 1149279748.

The previous prime is 1149279739. The next prime is 1149279793. The reversal of 1149279749 is 9479729411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888457249 + 260822500 = 29807^2 + 16150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149279749 - 2⁸ = 1149279493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1149279749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1149279739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574639874 + 574639875.

It is an arithmetic number, because the mean of its divisors is an integer number (574639875).

Almost surely, 2^1149279749 is an apocalyptic number.

It is an amenable number.

1149279749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149279749 is an equidigital number, since it uses as much as digits as its factorization.

1149279749 is an evil number, because the sum of its binary digits is even.

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

The square root of 1149279749 is about 33901.0287307037. The cubic root of 1149279749 is about 1047.4707830152.

The spelling of 1149279749 in words is "one billion, one hundred forty-nine million, two hundred seventy-nine thousand, seven hundred forty-nine".