99641400 has 96 divisors (see below), whose sum is σ = 313372800. Its totient is φ = 26185600.

The previous prime is 99641387. The next prime is 99641413. The reversal of 99641400 is 414699.

It is an interprime number because it is at equal distance from previous prime (99641387) and next prime (99641413).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41431 + ... + 43769.

It is an arithmetic number, because the mean of its divisors is an integer number (3264300).

Almost surely, 2^99641400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99641400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156686400).

99641400 is an abundant number, since it is smaller than the sum of its proper divisors (213731400).

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

99641400 is a wasteful number, since it uses less digits than its factorization.

99641400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 99641400 is about 9982.0538968691. The cubic root of 99641400 is about 463.6033942513.

The spelling of 99641400 in words is "ninety-nine million, six hundred forty-one thousand, four hundred".