99174840 has 64 divisors (see below), whose sum is σ = 299151360. Its totient is φ = 26302080.

The previous prime is 99174839. The next prime is 99174857. The reversal of 99174840 is 4847199.

It is a junction number, because it is equal to n+sod(n) for n = 99174792 and 99174801.

It is a congruent number.

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, 20757 + ... + 25083.

It is an arithmetic number, because the mean of its divisors is an integer number (4674240).

Almost surely, 2^99174840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99174840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149575680).

99174840 is an abundant number, since it is smaller than the sum of its proper divisors (199976520).

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

99174840 is a wasteful number, since it uses less digits than its factorization.

99174840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532 (or 4528 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 99174840 is about 9958.6565358988. The cubic root of 99174840 is about 462.8786711305.

The spelling of 99174840 in words is "ninety-nine million, one hundred seventy-four thousand, eight hundred forty".