1139535 has 32 divisors (see below), whose sum is σ = 2119680. Its totient is φ = 579744.

The previous prime is 1139531. The next prime is 1139539. The reversal of 1139535 is 5359311.

It is an interprime number because it is at equal distance from previous prime (1139531) and next prime (1139539).

It is not a de Polignac number, because 1139535 - 2² = 1139531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

1139535 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1139499 and 1139508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139531) 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 31 ways as a sum of consecutive naturals, for example, 2922 + ... + 3288.

It is an arithmetic number, because the mean of its divisors is an integer number (66240).

2^1139535 is an apocalyptic number.

1139535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1139535 is a deficient number, since it is larger than the sum of its proper divisors (980145).

1139535 is a wasteful number, since it uses less digits than its factorization.

1139535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 398 counting only the distinct ones).

The product of its digits is 2025, while the sum is 27.

The square root of 1139535 is about 1067.4900467920. The cubic root of 1139535 is about 104.4501872586.

The spelling of 1139535 in words is "one million, one hundred thirty-nine thousand, five hundred thirty-five".