1138955 has 12 divisors (see below), whose sum is σ = 1444752. Its totient is φ = 861840.

The previous prime is 1138919. The next prime is 1138957. The reversal of 1138955 is 5598311.

It is not a de Polignac number, because 1138955 - 2¹⁴ = 1122571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1490 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (120396).

2^1138955 is an apocalyptic number.

1138955 is a deficient number, since it is larger than the sum of its proper divisors (305797).

1138955 is an equidigital number, since it uses as much as digits as its factorization.

1138955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 655 counting only the distinct ones).

The product of its digits is 5400, while the sum is 32.

The square root of 1138955 is about 1067.2183469188. The cubic root of 1138955 is about 104.4324632485.

The spelling of 1138955 in words is "one million, one hundred thirty-eight thousand, nine hundred fifty-five".