99234978 has 8 divisors (see below), whose sum is σ = 198469968. Its totient is φ = 33078324.

The previous prime is 99234931. The next prime is 99234997. The reversal of 99234978 is 87943299.

It is a sphenic number, since it is the product of 3 distinct primes.

99234978 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 99234978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8269576 + ... + 8269587.

It is an arithmetic number, because the mean of its divisors is an integer number (24808746).

Almost surely, 2^99234978 is an apocalyptic number.

99234978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99234978 is a wasteful number, since it uses less digits than its factorization.

99234978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16539168.

The product of its digits is 979776, while the sum is 51.

The square root of 99234978 is about 9961.6754614874. The cubic root of 99234978 is about 462.9722129094.

The spelling of 99234978 in words is "ninety-nine million, two hundred thirty-four thousand, nine hundred seventy-eight".