11157639 has 8 divisors (see below), whose sum is σ = 15016320. Its totient is φ = 7368696.

The previous prime is 11157623. The next prime is 11157673. The reversal of 11157639 is 93675111.

It is a happy number.

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

It is not a de Polignac number, because 11157639 - 2⁴ = 11157623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11157689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17059 + ... + 17700.

It is an arithmetic number, because the mean of its divisors is an integer number (1877040).

Almost surely, 2^11157639 is an apocalyptic number.

11157639 is a deficient number, since it is larger than the sum of its proper divisors (3858681).

11157639 is a wasteful number, since it uses less digits than its factorization.

11157639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34869.

The product of its digits is 5670, while the sum is 33.

The square root of 11157639 is about 3340.3052255745. The cubic root of 11157639 is about 223.4553559564.

The spelling of 11157639 in words is "eleven million, one hundred fifty-seven thousand, six hundred thirty-nine".