99870782 has 8 divisors (see below), whose sum is σ = 163424952. Its totient is φ = 45395800.

The previous prime is 99870781. The next prime is 99870787. The reversal of 99870782 is 28707899.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 99870782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99870781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2269769 + ... + 2269812.

It is an arithmetic number, because the mean of its divisors is an integer number (20428119).

Almost surely, 2^99870782 is an apocalyptic number.

99870782 is a deficient number, since it is larger than the sum of its proper divisors (63554170).

99870782 is a wasteful number, since it uses less digits than its factorization.

99870782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539594.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 99870782 is about 9993.5370114890. The cubic root of 99870782 is about 463.9588715775.

The spelling of 99870782 in words is "ninety-nine million, eight hundred seventy thousand, seven hundred eighty-two".