911979 has 18 divisors (see below), whose sum is σ = 1377740. Its totient is φ = 603612.

The previous prime is 911969. The next prime is 912007. The reversal of 911979 is 979119.

It is not a de Polignac number, because 911979 - 2⁵ = 911947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (911959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6492 + ... + 6630.

2⁹¹¹⁹⁷⁹ is an apocalyptic number.

911979 is a deficient number, since it is larger than the sum of its proper divisors (465761).

911979 is an frugal number, since it uses more digits than its factorization.

911979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 142 counting only the distinct ones).

The product of its digits is 5103, while the sum is 36.

The square root of 911979 is about 954.9759159267. The cubic root of 911979 is about 96.9754073766.

The spelling of 911979 in words is "nine hundred eleven thousand, nine hundred seventy-nine".