11017979 has 4 divisors (see below), whose sum is σ = 12591984. Its totient is φ = 9443976.

The previous prime is 11017973. The next prime is 11018027. The reversal of 11017979 is 97971011.

It is a happy number.

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 11017979 - 2¹² = 11013883 is a prime.

It is a super-2 number, since 2×11017979² = 242791722488882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11017973) 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, 786992 + ... + 787005.

It is an arithmetic number, because the mean of its divisors is an integer number (3147996).

Almost surely, 2^11017979 is an apocalyptic number.

11017979 is a deficient number, since it is larger than the sum of its proper divisors (1574005).

11017979 is an equidigital number, since it uses as much as digits as its factorization.

11017979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574004.

The product of its (nonzero) digits is 3969, while the sum is 35.

The square root of 11017979 is about 3319.3341199704. The cubic root of 11017979 is about 222.5191095820.

The spelling of 11017979 in words is "eleven million, seventeen thousand, nine hundred seventy-nine".