99870373 has 4 divisors (see below), whose sum is σ = 99898348. Its totient is φ = 99842400.

The previous prime is 99870367. The next prime is 99870389. The reversal of 99870373 is 37307899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13417569 + 86452804 = 3663^2 + 9298^2 .

It is a cyclic number.

It is not a de Polignac number, because 99870373 - 2⁵ = 99870341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99874373) 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, 7686 + ... + 16087.

It is an arithmetic number, because the mean of its divisors is an integer number (24974587).

Almost surely, 2^99870373 is an apocalyptic number.

It is an amenable number.

99870373 is a deficient number, since it is larger than the sum of its proper divisors (27975).

99870373 is a wasteful number, since it uses less digits than its factorization.

99870373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27974.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 99870373 is about 9993.5165482427. The cubic root of 99870373 is about 463.9582382276.

The spelling of 99870373 in words is "ninety-nine million, eight hundred seventy thousand, three hundred seventy-three".