99340921 has 8 divisors (see below), whose sum is σ = 104707080. Its totient is φ = 94104192.

The previous prime is 99340919. The next prime is 99340963. The reversal of 99340921 is 12904399.

It can be written as a sum of positive squares in 4 ways, for example, as 26409321 + 72931600 = 5139^2 + 8540^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99340921 - 2¹ = 99340919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99340981) 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 7 ways as a sum of consecutive naturals, for example, 30780 + ... + 33853.

It is an arithmetic number, because the mean of its divisors is an integer number (13088385).

Almost surely, 2^99340921 is an apocalyptic number.

It is an amenable number.

99340921 is a deficient number, since it is larger than the sum of its proper divisors (5366159).

99340921 is a wasteful number, since it uses less digits than its factorization.

99340921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64715.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 99340921 is about 9966.9915721847. The cubic root of 99340921 is about 463.1369102831.

It can be divided in two parts, 993 and 40921, that added together give a palindrome (41914).

The spelling of 99340921 in words is "ninety-nine million, three hundred forty thousand, nine hundred twenty-one".