1139955 has 8 divisors (see below), whose sum is σ = 1823952. Its totient is φ = 607968.

The previous prime is 1139951. The next prime is 1139959. The reversal of 1139955 is 5599311.

It is an interprime number because it is at equal distance from previous prime (1139951) and next prime (1139959).

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

It is not a de Polignac number, because 1139955 - 2² = 1139951 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1139951) 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 7 ways as a sum of consecutive naturals, for example, 37984 + ... + 38013.

It is an arithmetic number, because the mean of its divisors is an integer number (227994).

2^1139955 is an apocalyptic number.

1139955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1139955 is a deficient number, since it is larger than the sum of its proper divisors (683997).

1139955 is an equidigital number, since it uses as much as digits as its factorization.

1139955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76005.

The product of its digits is 6075, while the sum is 33.

The square root of 1139955 is about 1067.6867518144. The cubic root of 1139955 is about 104.4630181327.

The spelling of 1139955 in words is "one million, one hundred thirty-nine thousand, nine hundred fifty-five".