10979861 has 4 divisors (see below), whose sum is σ = 11276652. Its totient is φ = 10683072.

The previous prime is 10979833. The next prime is 10979867. The reversal of 10979861 is 16897901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4977361 + 6002500 = 2231^2 + 2450^2 .

It is a cyclic number.

It is not a de Polignac number, because 10979861 - 2²² = 6785557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10979867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148340 + ... + 148413.

It is an arithmetic number, because the mean of its divisors is an integer number (2819163).

Almost surely, 2^10979861 is an apocalyptic number.

It is an amenable number.

10979861 is a deficient number, since it is larger than the sum of its proper divisors (296791).

10979861 is an equidigital number, since it uses as much as digits as its factorization.

10979861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296790.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 10979861 is about 3313.5873309753. The cubic root of 10979861 is about 222.2622027047.

The spelling of 10979861 in words is "ten million, nine hundred seventy-nine thousand, eight hundred sixty-one".