10299921 has 4 divisors (see below), whose sum is σ = 13733232. Its totient is φ = 6866612.

The previous prime is 10299917. The next prime is 10299953. The reversal of 10299921 is 12999201.

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 10299921 - 2² = 10299917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10299521) 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, 1716651 + ... + 1716656.

It is an arithmetic number, because the mean of its divisors is an integer number (3433308).

Almost surely, 2^10299921 is an apocalyptic number.

It is an amenable number.

10299921 is a deficient number, since it is larger than the sum of its proper divisors (3433311).

10299921 is an equidigital number, since it uses as much as digits as its factorization.

10299921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433310.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 10299921 is about 3209.3489994078. The cubic root of 10299921 is about 217.5761551262.

The spelling of 10299921 in words is "ten million, two hundred ninety-nine thousand, nine hundred twenty-one".