229699440 has 60 divisors (see below), whose sum is σ = 771409704. Its totient is φ = 61252992.

The previous prime is 229699411. The next prime is 229699451. The reversal of 229699440 is 44996922.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158794 + ... + 160233.

Almost surely, 2^229699440 is an apocalyptic number.

229699440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229699440 is an abundant number, since it is smaller than the sum of its proper divisors (541710264).

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

229699440 is a wasteful number, since it uses less digits than its factorization.

229699440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319046 (or 319037 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 229699440 is about 15155.8384789493. The cubic root of 229699440 is about 612.4255658541.

The spelling of 229699440 in words is "two hundred twenty-nine million, six hundred ninety-nine thousand, four hundred forty".