99420385 has 8 divisors (see below), whose sum is σ = 119437416. Its totient is φ = 79447680.

The previous prime is 99420371. The next prime is 99420427. The reversal of 99420385 is 58302499.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11135569 + 88284816 = 3337^2 + 9396^2 .

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

It is not a de Polignac number, because 99420385 - 2¹¹ = 99418337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5926 + ... + 15295.

It is an arithmetic number, because the mean of its divisors is an integer number (14929677).

Almost surely, 2^99420385 is an apocalyptic number.

It is an amenable number.

99420385 is a deficient number, since it is larger than the sum of its proper divisors (20017031).

99420385 is a wasteful number, since it uses less digits than its factorization.

99420385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22163.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 99420385 is about 9970.9771336615. The cubic root of 99420385 is about 463.2603669696.

The spelling of 99420385 in words is "ninety-nine million, four hundred twenty thousand, three hundred eighty-five".