99397633 has 4 divisors (see below), whose sum is σ = 99446788. Its totient is φ = 99348480.

The previous prime is 99397619. The next prime is 99397637. The reversal of 99397633 is 33679399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33679399 = 13 ⋅2590723.

It can be written as a sum of positive squares in 2 ways, for example, as 4276624 + 95121009 = 2068^2 + 9753^2 .

It is a cyclic number.

It is not a de Polignac number, because 99397633 - 2¹⁷ = 99266561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99397637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21408 + ... + 25633.

It is an arithmetic number, because the mean of its divisors is an integer number (24861697).

Almost surely, 2^99397633 is an apocalyptic number.

It is an amenable number.

99397633 is a deficient number, since it is larger than the sum of its proper divisors (49155).

99397633 is a wasteful number, since it uses less digits than its factorization.

99397633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49154.

The product of its digits is 826686, while the sum is 49.

The square root of 99397633 is about 9969.8361571292. The cubic root of 99397633 is about 463.2250257801.

It can be divided in two parts, 993976 and 33, that added together give a square (994009 = 997²).

The spelling of 99397633 in words is "ninety-nine million, three hundred ninety-seven thousand, six hundred thirty-three".