11697139 has 4 divisors (see below), whose sum is σ = 12385224. Its totient is φ = 11009056.

The previous prime is 11697131. The next prime is 11697167. The reversal of 11697139 is 93179611.

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 11697139 - 2³ = 11697131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11697098 and 11697107.

It is not an unprimeable number, because it can be changed into a prime (11697131) 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, 344017 + ... + 344050.

It is an arithmetic number, because the mean of its divisors is an integer number (3096306).

Almost surely, 2^11697139 is an apocalyptic number.

11697139 is a deficient number, since it is larger than the sum of its proper divisors (688085).

11697139 is an equidigital number, since it uses as much as digits as its factorization.

11697139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688084.

The product of its digits is 10206, while the sum is 37.

The square root of 11697139 is about 3420.1080392292. The cubic root of 11697139 is about 227.0003622550. Note that the first 3 decimals are identical.

The spelling of 11697139 in words is "eleven million, six hundred ninety-seven thousand, one hundred thirty-nine".