99389005 has 4 divisors (see below), whose sum is σ = 119266812. Its totient is φ = 79511200.

The previous prime is 99388967. The next prime is 99389029. The reversal of 99389005 is 50098399.

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 28526281 + 70862724 = 5341^2 + 8418^2 .

It is not a de Polignac number, because 99389005 - 2⁹ = 99388493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9938896 + ... + 9938905.

It is an arithmetic number, because the mean of its divisors is an integer number (29816703).

Almost surely, 2^99389005 is an apocalyptic number.

It is an amenable number.

99389005 is a deficient number, since it is larger than the sum of its proper divisors (19877807).

99389005 is a wasteful number, since it uses less digits than its factorization.

99389005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19877806.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 99389005 is about 9969.4034425336. The cubic root of 99389005 is about 463.2116223048.

It can be divided in two parts, 993 and 89005, that added together give a palindrome (89998).

The spelling of 99389005 in words is "ninety-nine million, three hundred eighty-nine thousand, five".