99299280 has 80 divisors (see below), whose sum is σ = 321229440. Its totient is φ = 25327104.

The previous prime is 99299279. The next prime is 99299281. The reversal of 99299280 is 8299299.

It is an interprime number because it is at equal distance from previous prime (99299279) and next prime (99299281).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99299281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3475 + ... + 14514.

It is an arithmetic number, because the mean of its divisors is an integer number (4015368).

Almost surely, 2^99299280 is an apocalyptic number.

It is an amenable number.

99299280 is an abundant number, since it is smaller than the sum of its proper divisors (221930160).

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

99299280 is a wasteful number, since it uses less digits than its factorization.

99299280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18028 (or 18022 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 99299280 is about 9964.9024079516. The cubic root of 99299280 is about 463.0721897927.

The spelling of 99299280 in words is "ninety-nine million, two hundred ninety-nine thousand, two hundred eighty".