99804877 has 4 divisors (see below), whose sum is σ = 100688220. Its totient is φ = 98921536.

The previous prime is 99804827. The next prime is 99804893. The reversal of 99804877 is 77840899.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77840899 = 263 ⋅295973.

It can be written as a sum of positive squares in 2 ways, for example, as 2604996 + 97199881 = 1614^2 + 9859^2 .

It is a cyclic number.

It is not a de Polignac number, because 99804877 - 2¹⁵ = 99772109 is a prime.

It is a super-2 number, since 2×99804877² = 19922026945970258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99804827) 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 3 ways as a sum of consecutive naturals, for example, 441502 + ... + 441727.

It is an arithmetic number, because the mean of its divisors is an integer number (25172055).

Almost surely, 2^99804877 is an apocalyptic number.

It is an amenable number.

99804877 is a deficient number, since it is larger than the sum of its proper divisors (883343).

99804877 is a wasteful number, since it uses less digits than its factorization.

99804877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883342.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 99804877 is about 9990.2390862281. The cubic root of 99804877 is about 463.8567932142.

The spelling of 99804877 in words is "ninety-nine million, eight hundred four thousand, eight hundred seventy-seven".