99717440 has 56 divisors (see below), whose sum is σ = 241048032. Its totient is φ = 39283200.

The previous prime is 99717439. The next prime is 99717463. The reversal of 99717440 is 4471799.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19115 + ... + 23765.

Almost surely, 2^99717440 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 99717440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120524016).

99717440 is an abundant number, since it is smaller than the sum of its proper divisors (141330592).

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

99717440 is a wasteful number, since it uses less digits than its factorization.

99717440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735 (or 4725 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 99717440 is about 9985.8620058561. The cubic root of 99717440 is about 463.7212951721.

The spelling of 99717440 in words is "ninety-nine million, seven hundred seventeen thousand, four hundred forty".