99442261 has 8 divisors (see below), whose sum is σ = 103540248. Its totient is φ = 95424000.

The previous prime is 99442253. The next prime is 99442283. The reversal of 99442261 is 16224499.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17901361 + 81540900 = 4231^2 + 9030^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99442261 - 2³ = 99442253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99442261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99442201) 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, 17380 + ... + 22381.

It is an arithmetic number, because the mean of its divisors is an integer number (12942531).

Almost surely, 2^99442261 is an apocalyptic number.

It is an amenable number.

99442261 is a deficient number, since it is larger than the sum of its proper divisors (4097987).

99442261 is a wasteful number, since it uses less digits than its factorization.

99442261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39863.

The product of its digits is 31104, while the sum is 37.

The square root of 99442261 is about 9972.0740570856. The cubic root of 99442261 is about 463.2943423647.

The spelling of 99442261 in words is "ninety-nine million, four hundred forty-two thousand, two hundred sixty-one".