99382440 has 128 divisors (see below), whose sum is σ = 310210560. Its totient is φ = 25453824.

The previous prime is 99382433. The next prime is 99382447. The reversal of 99382440 is 4428399.

99382440 = T₄₀₁ + T₄₀₂ + ... + T₈₇₀.

It is an interprime number because it is at equal distance from previous prime (99382433) and next prime (99382447).

It is not an unprimeable number, because it can be changed into a prime (99382447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377749 + ... + 378011.

It is an arithmetic number, because the mean of its divisors is an integer number (2423520).

Almost surely, 2^99382440 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 99382440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155105280).

99382440 is an abundant number, since it is smaller than the sum of its proper divisors (210828120).

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

99382440 is a wasteful number, since it uses less digits than its factorization.

99382440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 99382440 is about 9969.0741796819. The cubic root of 99382440 is about 463.2014231509.

The spelling of 99382440 in words is "ninety-nine million, three hundred eighty-two thousand, four hundred forty".