99234581 has 12 divisors (see below), whose sum is σ = 104749260. Its totient is φ = 93994560.

The previous prime is 99234547. The next prime is 99234599. The reversal of 99234581 is 18543299.

It can be written as a sum of positive squares in 2 ways, for example, as 71250481 + 27984100 = 8441^2 + 5290^2 .

It is not a de Polignac number, because 99234581 - 2¹⁰ = 99233557 is a prime.

It is a super-2 number, since 2×99234581² = 19695004132491122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99234281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56801 + ... + 58521.

It is an arithmetic number, because the mean of its divisors is an integer number (8729105).

Almost surely, 2^99234581 is an apocalyptic number.

It is an amenable number.

99234581 is a deficient number, since it is larger than the sum of its proper divisors (5514679).

99234581 is a wasteful number, since it uses less digits than its factorization.

99234581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876 (or 1853 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 99234581 is about 9961.6555351006. The cubic root of 99234581 is about 462.9715955189.

The spelling of 99234581 in words is "ninety-nine million, two hundred thirty-four thousand, five hundred eighty-one".