1139507 has 4 divisors (see below), whose sum is σ = 1153320. Its totient is φ = 1125696.

The previous prime is 1139503. The next prime is 1139519. The reversal of 1139507 is 7059311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1139507 - 2² = 1139503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6782 + ... + 6947.

It is an arithmetic number, because the mean of its divisors is an integer number (288330).

2^1139507 is an apocalyptic number.

1139507 is a deficient number, since it is larger than the sum of its proper divisors (13813).

1139507 is an equidigital number, since it uses as much as digits as its factorization.

1139507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13812.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 1139507 is about 1067.4769318351. The cubic root of 1139507 is about 104.4493317549.

The spelling of 1139507 in words is "one million, one hundred thirty-nine thousand, five hundred seven".