10721929 has 4 divisors (see below), whose sum is σ = 10746576. Its totient is φ = 10697284.

The previous prime is 10721911. The next prime is 10721981. The reversal of 10721929 is 92912701.

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 not a de Polignac number, because 10721929 - 2¹¹ = 10719881 is a prime.

It is a super-2 number, since 2×10721929² = 229919522962082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10721929.

It is not an unprimeable number, because it can be changed into a prime (10721999) 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, 11659 + ... + 12544.

It is an arithmetic number, because the mean of its divisors is an integer number (2686644).

Almost surely, 2^10721929 is an apocalyptic number.

It is an amenable number.

10721929 is a deficient number, since it is larger than the sum of its proper divisors (24647).

10721929 is an equidigital number, since it uses as much as digits as its factorization.

10721929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24646.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 10721929 is about 3274.4356765708. The cubic root of 10721929 is about 220.5079790683.

The spelling of 10721929 in words is "ten million, seven hundred twenty-one thousand, nine hundred twenty-nine".