229188990 has 16 divisors (see below), whose sum is σ = 550053648. Its totient is φ = 61117056.

The previous prime is 229188941. The next prime is 229189007. The reversal of 229188990 is 99881922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3819787 + ... + 3819846.

It is an arithmetic number, because the mean of its divisors is an integer number (34378353).

Almost surely, 2^229188990 is an apocalyptic number.

229188990 is an abundant number, since it is smaller than the sum of its proper divisors (320864658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229188990 is a wasteful number, since it uses less digits than its factorization.

229188990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7639643.

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 229188990 is about 15138.9890679662. The cubic root of 229188990 is about 611.9715747830.

The spelling of 229188990 in words is "two hundred twenty-nine million, one hundred eighty-eight thousand, nine hundred ninety".