10979999 has 4 divisors (see below), whose sum is σ = 11213664. Its totient is φ = 10746336.

The previous prime is 10979971. The next prime is 10980029. The reversal of 10979999 is 99997901.

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 10979999 - 2⁸ = 10979743 is a prime.

It is a Duffinian number.

10979999 is a modest number, since divided by 9999 gives 1097 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 10979999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10972999) 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, 116762 + ... + 116855.

It is an arithmetic number, because the mean of its divisors is an integer number (2803416).

Almost surely, 2^10979999 is an apocalyptic number.

10979999 is a deficient number, since it is larger than the sum of its proper divisors (233665).

10979999 is an equidigital number, since it uses as much as digits as its factorization.

10979999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233664.

The product of its (nonzero) digits is 413343, while the sum is 53.

The square root of 10979999 is about 3313.6081542633. The cubic root of 10979999 is about 222.2631338658.

It can be divided in two parts, 109 and 79999, that added together give a palindrome (80108).

The spelling of 10979999 in words is "ten million, nine hundred seventy-nine thousand, nine hundred ninety-nine".