99740 has 12 divisors (see below), whose sum is σ = 209496. Its totient is φ = 39888.

The previous prime is 99733. The next prime is 99761. The reversal of 99740 is 4799.

99740 = T₂₅ + T₂₆ + ... + T₈₄.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99740.

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, 2474 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (17458).

2⁹⁹⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

99740 is an abundant number, since it is smaller than the sum of its proper divisors (109756).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104748).

99740 is a wasteful number, since it uses less digits than its factorization.

99740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4996 (or 4994 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 99740 is about 315.8164023606. The cubic root of 99740 is about 46.3756263190.

The spelling of 99740 in words is "ninety-nine thousand, seven hundred forty".