99749760 has 128 divisors (see below), whose sum is σ = 346930560. Its totient is φ = 24176640.

The previous prime is 99749759. The next prime is 99749789. The reversal of 99749760 is 6794799.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18759 + ... + 23481.

It is an arithmetic number, because the mean of its divisors is an integer number (2710395).

Almost surely, 2^99749760 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 99749760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173465280).

99749760 is an abundant number, since it is smaller than the sum of its proper divisors (247180800).

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

99749760 is a wasteful number, since it uses less digits than its factorization.

99749760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756 (or 4744 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 99749760 is about 9987.4801626837. The cubic root of 99749760 is about 463.7713895632.

The spelling of 99749760 in words is "ninety-nine million, seven hundred forty-nine thousand, seven hundred sixty".