10879981 has 4 divisors (see below), whose sum is σ = 12434272. Its totient is φ = 9325692.

The previous prime is 10879937. The next prime is 10879987. The reversal of 10879981 is 18997801.

10879981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10879981 is a prime.

It is a super-2 number, since 2×10879981² = 236747973120722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10879987) 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, 777135 + ... + 777148.

It is an arithmetic number, because the mean of its divisors is an integer number (3108568).

Almost surely, 2^10879981 is an apocalyptic number.

It is an amenable number.

10879981 is a deficient number, since it is larger than the sum of its proper divisors (1554291).

10879981 is an equidigital number, since it uses as much as digits as its factorization.

10879981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554290.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 10879981 is about 3298.4816203823. The cubic root of 10879981 is about 221.5862012830.

It can be divided in two parts, 108 and 79981, that added together give a square (80089 = 283²).

The spelling of 10879981 in words is "ten million, eight hundred seventy-nine thousand, nine hundred eighty-one".