22303999 has 4 divisors (see below), whose sum is σ = 22313880. Its totient is φ = 22294120.

The previous prime is 22303993. The next prime is 22304027. The reversal of 22303999 is 99930322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22303999 - 2¹⁵ = 22271231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22303993) 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, 297 + ... + 6685.

It is an arithmetic number, because the mean of its divisors is an integer number (5578470).

Almost surely, 2^22303999 is an apocalyptic number.

22303999 is a deficient number, since it is larger than the sum of its proper divisors (9881).

22303999 is an equidigital number, since it uses as much as digits as its factorization.

22303999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9880.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 22303999 is about 4722.7109799351. The cubic root of 22303999 is about 281.4886656277.

The spelling of 22303999 in words is "twenty-two million, three hundred three thousand, nine hundred ninety-nine".