99884797 has 4 divisors (see below), whose sum is σ = 99904860. Its totient is φ = 99864736.

The previous prime is 99884783. The next prime is 99884819. The reversal of 99884797 is 79748899.

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 2842596 + 97042201 = 1686^2 + 9851^2 .

It is a cyclic number.

It is not a de Polignac number, because 99884797 - 2¹⁵ = 99852029 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 (99884737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3729 + ... + 14617.

It is an arithmetic number, because the mean of its divisors is an integer number (24976215).

Almost surely, 2^99884797 is an apocalyptic number.

It is an amenable number.

99884797 is a deficient number, since it is larger than the sum of its proper divisors (20063).

99884797 is a wasteful number, since it uses less digits than its factorization.

99884797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20062.

The product of its digits is 9144576, while the sum is 61.

The square root of 99884797 is about 9994.2381900773. The cubic root of 99884797 is about 463.9805732181.

The spelling of 99884797 in words is "ninety-nine million, eight hundred eighty-four thousand, seven hundred ninety-seven".