229439840 has 48 divisors (see below), whose sum is σ = 619490592. Its totient is φ = 78664704.

The previous prime is 229439831. The next prime is 229439879. The reversal of 229439840 is 48934922.

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, 101309 + ... + 103548.

It is an arithmetic number, because the mean of its divisors is an integer number (12906054).

Almost surely, 2^229439840 is an apocalyptic number.

229439840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229439840 is an abundant number, since it is smaller than the sum of its proper divisors (390050752).

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

229439840 is a wasteful number, since it uses less digits than its factorization.

229439840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204879 (or 204871 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 229439840 is about 15147.2717015309. The cubic root of 229439840 is about 612.1947633639.

The spelling of 229439840 in words is "two hundred twenty-nine million, four hundred thirty-nine thousand, eight hundred forty".