11897539 has 2 divisors, whose sum is σ = 11897540. Its totient is φ = 11897538.

The previous prime is 11897531. The next prime is 11897549. The reversal of 11897539 is 93579811.

11897539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11897539 - 2³ = 11897531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11897495 and 11897504.

It is not a weakly prime, because it can be changed into another prime (11897531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5948769 + 5948770.

It is an arithmetic number, because the mean of its divisors is an integer number (5948770).

Almost surely, 2^11897539 is an apocalyptic number.

11897539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11897539 is an equidigital number, since it uses as much as digits as its factorization.

11897539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 11897539 is about 3449.2809395583. The cubic root of 11897539 is about 228.2893819656.

The spelling of 11897539 in words is "eleven million, eight hundred ninety-seven thousand, five hundred thirty-nine".