21094299 has 24 divisors (see below), whose sum is σ = 31299632. Its totient is φ = 13685760.

The previous prime is 21094279. The next prime is 21094357. The reversal of 21094299 is 99249012.

It is not a de Polignac number, because 21094299 - 2²⁴ = 4317083 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21094259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63564 + ... + 63894.

Almost surely, 2^21094299 is an apocalyptic number.

21094299 is a deficient number, since it is larger than the sum of its proper divisors (10205333).

21094299 is a wasteful number, since it uses less digits than its factorization.

21094299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 21094299 is about 4592.8530348793. The cubic root of 21094299 is about 276.3047594537.

The spelling of 21094299 in words is "twenty-one million, ninety-four thousand, two hundred ninety-nine".