99897290 has 8 divisors (see below), whose sum is σ = 179815140. Its totient is φ = 39958912.

The previous prime is 99897289. The next prime is 99897313. The reversal of 99897290 is 9279899.

It can be written as a sum of positive squares in 2 ways, for example, as 96845281 + 3052009 = 9841^2 + 1747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4994855 + ... + 4994874.

Almost surely, 2^99897290 is an apocalyptic number.

99897290 is a deficient number, since it is larger than the sum of its proper divisors (79917850).

99897290 is a wasteful number, since it uses less digits than its factorization.

99897290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9989736.

The product of its (nonzero) digits is 734832, while the sum is 53.

The square root of 99897290 is about 9994.8631806544. The cubic root of 99897290 is about 463.9999163942. Note that the first 4 decimals are identical.

The spelling of 99897290 in words is "ninety-nine million, eight hundred ninety-seven thousand, two hundred ninety".