99443540 has 144 divisors (see below), whose sum is σ = 264757248. Its totient is φ = 31159296.

The previous prime is 99443537. The next prime is 99443551. The reversal of 99443540 is 4534499.

It is a junction number, because it is equal to n+sod(n) for n = 99443494 and 99443503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 782957 + ... + 783083.

It is an arithmetic number, because the mean of its divisors is an integer number (1838592).

Almost surely, 2^99443540 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 99443540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132378624).

99443540 is an abundant number, since it is smaller than the sum of its proper divisors (165313708).

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

99443540 is a wasteful number, since it uses less digits than its factorization.

99443540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 99443540 is about 9972.1381859659. The cubic root of 99443540 is about 463.2963286125.

The spelling of 99443540 in words is "ninety-nine million, four hundred forty-three thousand, five hundred forty".