1139001255 has 48 divisors (see below), whose sum is σ = 2259226944. Its totient is φ = 520012800.

The previous prime is 1139001251. The next prime is 1139001301. The reversal of 1139001255 is 5521009311.

It is not a de Polignac number, because 1139001255 - 2² = 1139001251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139001251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 305905 + ... + 309605.

It is an arithmetic number, because the mean of its divisors is an integer number (47067228).

Almost surely, 2^1139001255 is an apocalyptic number.

1139001255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1139001255 is a deficient number, since it is larger than the sum of its proper divisors (1120225689).

1139001255 is a wasteful number, since it uses less digits than its factorization.

1139001255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696 (or 4693 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 1139001255 is about 33749.0926544700. The cubic root of 1139001255 is about 1044.3387695906.

The spelling of 1139001255 in words is "one billion, one hundred thirty-nine million, one thousand, two hundred fifty-five".