99855534 has 16 divisors (see below), whose sum is σ = 199901520. Its totient is φ = 33253440.

The previous prime is 99855533. The next prime is 99855571. The reversal of 99855534 is 43555899.

It is a happy number.

It is a super-2 number, since 2×99855534² = 19942255340850312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99855533) 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, 597 + ... + 14144.

It is an arithmetic number, because the mean of its divisors is an integer number (12493845).

Almost surely, 2^99855534 is an apocalyptic number.

99855534 is an abundant number, since it is smaller than the sum of its proper divisors (100045986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99855534 is a wasteful number, since it uses less digits than its factorization.

99855534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15875.

The product of its digits is 972000, while the sum is 48.

The square root of 99855534 is about 9992.7740893107. The cubic root of 99855534 is about 463.9352583818.

The spelling of 99855534 in words is "ninety-nine million, eight hundred fifty-five thousand, five hundred thirty-four".