1149439287 has 16 divisors (see below), whose sum is σ = 1573158240. Its totient is φ = 746256000.

The previous prime is 1149439279. The next prime is 1149439307. The reversal of 1149439287 is 7829349411.

It is not a de Polignac number, because 1149439287 - 2³ = 1149439279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149439217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12612 + ... + 49577.

It is an arithmetic number, because the mean of its divisors is an integer number (98322390).

Almost surely, 2^1149439287 is an apocalyptic number.

1149439287 is a deficient number, since it is larger than the sum of its proper divisors (423718953).

1149439287 is a wasteful number, since it uses less digits than its factorization.

1149439287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62354.

The product of its digits is 435456, while the sum is 48.

The square root of 1149439287 is about 33903.3816454937. The cubic root of 1149439287 is about 1047.5192492138.

The spelling of 1149439287 in words is "one billion, one hundred forty-nine million, four hundred thirty-nine thousand, two hundred eighty-seven".