11557979 has 8 divisors (see below), whose sum is σ = 12065760. Its totient is φ = 11057536.

The previous prime is 11557963. The next prime is 11557981. The reversal of 11557979 is 97975511.

11557979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11557979 - 2⁴ = 11557963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11557919) 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, 1514 + ... + 5040.

It is an arithmetic number, because the mean of its divisors is an integer number (1508220).

Almost surely, 2^11557979 is an apocalyptic number.

11557979 is a deficient number, since it is larger than the sum of its proper divisors (507781).

11557979 is a wasteful number, since it uses less digits than its factorization.

11557979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669.

The product of its digits is 99225, while the sum is 44.

The square root of 11557979 is about 3399.7027811266. The cubic root of 11557979 is about 226.0965664024.

The spelling of 11557979 in words is "eleven million, five hundred fifty-seven thousand, nine hundred seventy-nine".