99809134 has 4 divisors (see below), whose sum is σ = 149713704. Its totient is φ = 49904566.

The previous prime is 99809117. The next prime is 99809141. The reversal of 99809134 is 43190899.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24952282 + ... + 24952285.

It is an arithmetic number, because the mean of its divisors is an integer number (37428426).

Almost surely, 2^99809134 is an apocalyptic number.

99809134 is a deficient number, since it is larger than the sum of its proper divisors (49904570).

99809134 is a wasteful number, since it uses less digits than its factorization.

99809134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49904569.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 99809134 is about 9990.4521419203. The cubic root of 99809134 is about 463.8633881167.

The spelling of 99809134 in words is "ninety-nine million, eight hundred nine thousand, one hundred thirty-four".