99890648 has 32 divisors (see below), whose sum is σ = 220041360. Its totient is φ = 41911680.

The previous prime is 99890647. The next prime is 99890671. The reversal of 99890648 is 84609899.

It is a super-3 number, since 3×99890648³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99890648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99890647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42515 + ... + 44802.

Almost surely, 2^99890648 is an apocalyptic number.

It is an amenable number.

99890648 is an abundant number, since it is smaller than the sum of its proper divisors (120150712).

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

99890648 is a wasteful number, since it uses less digits than its factorization.

99890648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87347 (or 87343 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 99890648 is about 9994.5309044497. The cubic root of 99890648 is about 463.9896326459.

The spelling of 99890648 in words is "ninety-nine million, eight hundred ninety thousand, six hundred forty-eight".