1139462449 has 4 divisors (see below), whose sum is σ = 1142094436. Its totient is φ = 1136830464.

The previous prime is 1139462437. The next prime is 1139462477. The reversal of 1139462449 is 9442649311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 186814224 + 952648225 = 13668^2 + 30865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139462449 - 2¹⁷ = 1139331377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139462419) 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, 1315344 + ... + 1316209.

It is an arithmetic number, because the mean of its divisors is an integer number (285523609).

Almost surely, 2^1139462449 is an apocalyptic number.

It is an amenable number.

1139462449 is a deficient number, since it is larger than the sum of its proper divisors (2631987).

1139462449 is an equidigital number, since it uses as much as digits as its factorization.

1139462449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631986.

The product of its digits is 186624, while the sum is 43.

The square root of 1139462449 is about 33755.9246503484. The cubic root of 1139462449 is about 1044.4797052802.

The spelling of 1139462449 in words is "one billion, one hundred thirty-nine million, four hundred sixty-two thousand, four hundred forty-nine".