1171479149 has 4 divisors (see below), whose sum is σ = 1172235036. Its totient is φ = 1170723264.

The previous prime is 1171479139. The next prime is 1171479173. The reversal of 1171479149 is 9419741711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9419741711 = 30839 ⋅305449.

It can be written as a sum of positive squares in 2 ways, for example, as 485982025 + 685497124 = 22045^2 + 26182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1171479149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171479109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375614 + ... + 378719.

It is an arithmetic number, because the mean of its divisors is an integer number (293058759).

Almost surely, 2^1171479149 is an apocalyptic number.

It is an amenable number.

1171479149 is a deficient number, since it is larger than the sum of its proper divisors (755887).

1171479149 is an equidigital number, since it uses as much as digits as its factorization.

1171479149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755886.

The product of its digits is 63504, while the sum is 44.

The square root of 1171479149 is about 34226.8775818070. The cubic root of 1171479149 is about 1054.1721076221.

The spelling of 1171479149 in words is "one billion, one hundred seventy-one million, four hundred seventy-nine thousand, one hundred forty-nine".