224099621 has 6 divisors (see below), whose sum is σ = 225142950. Its totient is φ = 223061096.

The previous prime is 224099611. The next prime is 224099653. The reversal of 224099621 is 126990422.

It can be written as a sum of positive squares in only one way, i.e., 128822500 + 95277121 = 11350^2 + 9761^2 .

It is not a de Polignac number, because 224099621 - 2¹⁸ = 223837477 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 (224099611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49355 + ... + 53703.

It is an arithmetic number, because the mean of its divisors is an integer number (37523825).

Almost surely, 2^224099621 is an apocalyptic number.

It is an amenable number.

224099621 is a deficient number, since it is larger than the sum of its proper divisors (1043329).

224099621 is an frugal number, since it uses more digits than its factorization.

224099621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803 (or 4576 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 224099621 is about 14969.9572811682. The cubic root of 224099621 is about 607.4078131833.

The spelling of 224099621 in words is "two hundred twenty-four million, ninety-nine thousand, six hundred twenty-one".