223949590 has 16 divisors (see below), whose sum is σ = 412484688. Its totient is φ = 87496416.

The previous prime is 223949587. The next prime is 223949591. The reversal of 223949590 is 95949322.

It is a happy number.

223949590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×223949590² = 100306837722336200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223949591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259977 + ... + 260836.

It is an arithmetic number, because the mean of its divisors is an integer number (25780293).

Almost surely, 2^223949590 is an apocalyptic number.

223949590 is a deficient number, since it is larger than the sum of its proper divisors (188535098).

223949590 is a wasteful number, since it uses less digits than its factorization.

223949590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520863.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 223949590 is about 14964.9453724362. The cubic root of 223949590 is about 607.2722330851.

The spelling of 223949590 in words is "two hundred twenty-three million, nine hundred forty-nine thousand, five hundred ninety".