1149559899 has 8 divisors (see below), whose sum is σ = 1532918352. Its totient is φ = 766287360.

The previous prime is 1149559897. The next prime is 1149559973. The reversal of 1149559899 is 9989559411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1149559899 - 2¹ = 1149559897 is a prime.

It is a super-2 number, since 2×1149559899² = 2642975922777780402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1149559897) 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 7 ways as a sum of consecutive naturals, for example, 22767 + ... + 53079.

It is an arithmetic number, because the mean of its divisors is an integer number (191614794).

Almost surely, 2^1149559899 is an apocalyptic number.

1149559899 is a deficient number, since it is larger than the sum of its proper divisors (383358453).

1149559899 is a wasteful number, since it uses less digits than its factorization.

1149559899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42957.

The product of its digits is 5248800, while the sum is 60.

The square root of 1149559899 is about 33905.1603594497. The cubic root of 1149559899 is about 1047.5558870697. Note that the first 3 decimals are identical.

The spelling of 1149559899 in words is "one billion, one hundred forty-nine million, five hundred fifty-nine thousand, eight hundred ninety-nine".