1139864889 has 16 divisors (see below), whose sum is σ = 1594220544. Its totient is φ = 723056400.

The previous prime is 1139864879. The next prime is 1139864893. The reversal of 1139864889 is 9884689311.

It is not a de Polignac number, because 1139864889 - 2⁵ = 1139864857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1139864839) 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 15 ways as a sum of consecutive naturals, for example, 30067 + ... + 56424.

It is an arithmetic number, because the mean of its divisors is an integer number (99638784).

Almost surely, 2^1139864889 is an apocalyptic number.

It is an amenable number.

1139864889 is a deficient number, since it is larger than the sum of its proper divisors (454355655).

1139864889 is a wasteful number, since it uses less digits than its factorization.

1139864889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86708.

The product of its digits is 2985984, while the sum is 57.

The square root of 1139864889 is about 33761.8851517506. The cubic root of 1139864889 is about 1044.6026553422.

The spelling of 1139864889 in words is "one billion, one hundred thirty-nine million, eight hundred sixty-four thousand, eight hundred eighty-nine".