99449280 has 168 divisors, whose sum is σ = 391009632. Its totient is φ = 22726656.

The previous prime is 99449267. The next prime is 99449299. The reversal of 99449280 is 8294499.

It is a tau number, because it is divible by the number of its divisors (168).

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 23 ways as a sum of consecutive naturals, for example, 17694 + ... + 22626.

Almost surely, 2^99449280 is an apocalyptic number.

99449280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99449280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195504816).

99449280 is an abundant number, since it is smaller than the sum of its proper divisors (291560352).

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

99449280 is a wasteful number, since it uses less digits than its factorization.

99449280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963 (or 4950 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 99449280 is about 9972.4259836812. The cubic root of 99449280 is about 463.3052424469.

The spelling of 99449280 in words is "ninety-nine million, four hundred forty-nine thousand, two hundred eighty".