1139455 has 8 divisors (see below), whose sum is σ = 1373904. Its totient is φ = 907200.

The previous prime is 1139423. The next prime is 1139461. The reversal of 1139455 is 5549311.

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

It is not a de Polignac number, because 1139455 - 2⁵ = 1139423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1000 + ... + 1810.

It is an arithmetic number, because the mean of its divisors is an integer number (171738).

2^1139455 is an apocalyptic number.

1139455 is a deficient number, since it is larger than the sum of its proper divisors (234449).

1139455 is an equidigital number, since it uses as much as digits as its factorization.

1139455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097.

The product of its digits is 2700, while the sum is 28.

The square root of 1139455 is about 1067.4525750590. The cubic root of 1139455 is about 104.4477429252.

It can be divided in two parts, 11394 and 55, that added together give a square (11449 = 107²).

The spelling of 1139455 in words is "one million, one hundred thirty-nine thousand, four hundred fifty-five".