99870340 has 12 divisors (see below), whose sum is σ = 209727756. Its totient is φ = 39948128.

The previous prime is 99870319. The next prime is 99870341. The reversal of 99870340 is 4307899.

It can be written as a sum of positive squares in 2 ways, for example, as 34292736 + 65577604 = 5856^2 + 8098^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99870293 and 99870302.

It is not an unprimeable number, because it can be changed into a prime (99870341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2496739 + ... + 2496778.

It is an arithmetic number, because the mean of its divisors is an integer number (17477313).

Almost surely, 2^99870340 is an apocalyptic number.

It is an amenable number.

99870340 is an abundant number, since it is smaller than the sum of its proper divisors (109857416).

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

99870340 is a wasteful number, since it uses less digits than its factorization.

99870340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993526 (or 4993524 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 99870340 is about 9993.5148971721. The cubic root of 99870340 is about 463.9581871260.

The spelling of 99870340 in words is "ninety-nine million, eight hundred seventy thousand, three hundred forty".