99299278 has 32 divisors (see below), whose sum is σ = 170674560. Its totient is φ = 42923520.

The previous prime is 99299243. The next prime is 99299279. The reversal of 99299278 is 87299299.

99299278 is a nontrivial binomial coefficient, being equal to C(14093, 2).

It is a super-2 number, since 2×99299278² = 19720693222642568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99299279) 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, 119368 + ... + 120196.

It is an arithmetic number, because the mean of its divisors is an integer number (5333580).

Almost surely, 2^99299278 is an apocalyptic number.

99299278 is the 14092-nd triangular number.

99299278 is the 4698-th centered nonagonal number.

99299278 is a deficient number, since it is larger than the sum of its proper divisors (71375282).

99299278 is a wasteful number, since it uses less digits than its factorization.

99299278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its digits is 1469664, while the sum is 55.

The square root of 99299278 is about 9964.9023075994. The cubic root of 99299278 is about 463.0721866838.

The spelling of 99299278 in words is "ninety-nine million, two hundred ninety-nine thousand, two hundred seventy-eight".