1139845 has 16 divisors (see below), whose sum is σ = 1618560. Its totient is φ = 753984.

The previous prime is 1139843. The next prime is 1139849. The reversal of 1139845 is 5489311.

It is not a de Polignac number, because 1139845 - 2¹ = 1139843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454 + ... + 1576.

It is an arithmetic number, because the mean of its divisors is an integer number (101160).

2^1139845 is an apocalyptic number.

It is an amenable number.

1139845 is a deficient number, since it is larger than the sum of its proper divisors (478715).

1139845 is a wasteful number, since it uses less digits than its factorization.

1139845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164.

The product of its digits is 4320, while the sum is 31.

The square root of 1139845 is about 1067.6352373353. The cubic root of 1139845 is about 104.4596579703.

The spelling of 1139845 in words is "one million, one hundred thirty-nine thousand, eight hundred forty-five".