99879648 has 48 divisors (see below), whose sum is σ = 286022016. Its totient is φ = 30266240.

The previous prime is 99879629. The next prime is 99879667. The reversal of 99879648 is 84697899.

It is an interprime number because it is at equal distance from previous prime (99879629) and next prime (99879667).

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 99879591 and 99879600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46236 + ... + 48347.

It is an arithmetic number, because the mean of its divisors is an integer number (5958792).

Almost surely, 2^99879648 is an apocalyptic number.

It is an amenable number.

99879648 is an abundant number, since it is smaller than the sum of its proper divisors (186142368).

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

99879648 is a wasteful number, since it uses less digits than its factorization.

99879648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94607 (or 94599 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 60.

The square root of 99879648 is about 9993.9805883342. The cubic root of 99879648 is about 463.9726004431.

The spelling of 99879648 in words is "ninety-nine million, eight hundred seventy-nine thousand, six hundred forty-eight".