99224278 has 4 divisors (see below), whose sum is σ = 148836420. Its totient is φ = 49612138.

The previous prime is 99224267. The next prime is 99224311. The reversal of 99224278 is 87242299.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24806068 + ... + 24806071.

It is an arithmetic number, because the mean of its divisors is an integer number (37209105).

Almost surely, 2^99224278 is an apocalyptic number.

99224278 is a deficient number, since it is larger than the sum of its proper divisors (49612142).

99224278 is a wasteful number, since it uses less digits than its factorization.

99224278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49612141.

The product of its digits is 145152, while the sum is 43.

The square root of 99224278 is about 9961.1383887586. The cubic root of 99224278 is about 462.9555723363.

The spelling of 99224278 in words is "ninety-nine million, two hundred twenty-four thousand, two hundred seventy-eight".