99801135 has 48 divisors (see below), whose sum is σ = 209342016. Its totient is φ = 42937344.

The previous prime is 99801131. The next prime is 99801139. The reversal of 99801135 is 53110899.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99801131) and next prime (99801139).

It is not a de Polignac number, because 99801135 - 2² = 99801131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99801135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99801131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3964 + ... + 14673.

It is an arithmetic number, because the mean of its divisors is an integer number (4361292).

Almost surely, 2^99801135 is an apocalyptic number.

99801135 is an abundant number, since it is smaller than the sum of its proper divisors (109540881).

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

99801135 is a wasteful number, since it uses less digits than its factorization.

99801135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18672 (or 18669 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 99801135 is about 9990.0518016675. The cubic root of 99801135 is about 463.8509959898.

The spelling of 99801135 in words is "ninety-nine million, eight hundred one thousand, one hundred thirty-five".