99339840 has 168 divisors, whose sum is σ = 361965240. Its totient is φ = 24920064.

The previous prime is 99339839. The next prime is 99339881. The reversal of 99339840 is 4893399.

It can be written as a sum of positive squares in 4 ways, for example, as 52881984 + 46457856 = 7272^2 + 6816^2 .

It is a super-2 number, since 2×99339840² = 19736807622451200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 47946 + ... + 49974.

It is an arithmetic number, because the mean of its divisors is an integer number (2154555).

Almost surely, 2^99339840 is an apocalyptic number.

99339840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99339840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180982620).

99339840 is an abundant number, since it is smaller than the sum of its proper divisors (262625400).

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

99339840 is a wasteful number, since it uses less digits than its factorization.

99339840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069 (or 2056 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 99339840 is about 9966.9373430357. The cubic root of 99339840 is about 463.1352303684.

The spelling of 99339840 in words is "ninety-nine million, three hundred thirty-nine thousand, eight hundred forty".