1099133955 has 24 divisors (see below), whose sum is σ = 1975729392. Its totient is φ = 586204128.

The previous prime is 1099133953. The next prime is 1099133977. The reversal of 1099133955 is 5593319901.

It is a happy number.

It is not a de Polignac number, because 1099133955 - 2¹ = 1099133953 is a prime.

It is a super-4 number, since 4×1099133955⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1099133955.

It is not an unprimeable number, because it can be changed into a prime (1099133953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 451104 + ... + 453533.

It is an arithmetic number, because the mean of its divisors is an integer number (82322058).

Almost surely, 2^1099133955 is an apocalyptic number.

1099133955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1099133955 is a deficient number, since it is larger than the sum of its proper divisors (876595437).

1099133955 is an frugal number, since it uses more digits than its factorization.

1099133955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904657 (or 904645 counting only the distinct ones).

The product of its (nonzero) digits is 164025, while the sum is 45.

The square root of 1099133955 is about 33153.1892131059. The cubic root of 1099133955 is about 1032.0091349245.

The spelling of 1099133955 in words is "one billion, ninety-nine million, one hundred thirty-three thousand, nine hundred fifty-five".