1139052449 has 4 divisors (see below), whose sum is σ = 1139124036. Its totient is φ = 1138980864.

The previous prime is 1139052433. The next prime is 1139052457. The reversal of 1139052449 is 9442509311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9442509311 = 32713 ⋅288647.

It can be written as a sum of positive squares in 2 ways, for example, as 125776225 + 1013276224 = 11215^2 + 31832^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139052449 - 2⁴ = 1139052433 is a prime.

It is a super-3 number, since 3×1139052449³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139052419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17 + ... + 47729.

It is an arithmetic number, because the mean of its divisors is an integer number (284781009).

Almost surely, 2^1139052449 is an apocalyptic number.

It is an amenable number.

1139052449 is a deficient number, since it is larger than the sum of its proper divisors (71587).

1139052449 is an equidigital number, since it uses as much as digits as its factorization.

1139052449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71586.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1139052449 is about 33749.8510959678. The cubic root of 1139052449 is about 1044.3544157771.

The spelling of 1139052449 in words is "one billion, one hundred thirty-nine million, fifty-two thousand, four hundred forty-nine".