99840234 has 32 divisors (see below), whose sum is σ = 219106944. Its totient is φ = 30139200.

The previous prime is 99840229. The next prime is 99840259. The reversal of 99840234 is 43204899.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 99840192 and 99840201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7942 + ... + 16209.

It is an arithmetic number, because the mean of its divisors is an integer number (6847092).

Almost surely, 2^99840234 is an apocalyptic number.

99840234 is an abundant number, since it is smaller than the sum of its proper divisors (119266710).

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

99840234 is a wasteful number, since it uses less digits than its factorization.

99840234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24222.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 99840234 is about 9992.0085068018. The cubic root of 99840234 is about 463.9115622423.

The spelling of 99840234 in words is "ninety-nine million, eight hundred forty thousand, two hundred thirty-four".