99474144 has 96 divisors (see below), whose sum is σ = 325575936. Its totient is φ = 25835520.

The previous prime is 99474127. The next prime is 99474181. The reversal of 99474144 is 44147499.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 99474096 and 99474105.

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, 664 + ... + 14120.

It is an arithmetic number, because the mean of its divisors is an integer number (3391416).

Almost surely, 2^99474144 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 99474144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162787968).

99474144 is an abundant number, since it is smaller than the sum of its proper divisors (226101792).

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

99474144 is a wasteful number, since it uses less digits than its factorization.

99474144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13488 (or 13480 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 99474144 is about 9973.6725432511. The cubic root of 99474144 is about 463.3438506086.

The spelling of 99474144 in words is "ninety-nine million, four hundred seventy-four thousand, one hundred forty-four".