99281965 has 8 divisors (see below), whose sum is σ = 119351160. Its totient is φ = 79283712.

The previous prime is 99281947. The next prime is 99281981. The reversal of 99281965 is 56918299.

It can be written as a sum of positive squares in 4 ways, for example, as 2515396 + 96766569 = 1586^2 + 9837^2 .

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 99281965 - 2¹⁷ = 99150893 is a prime.

It is a super-2 number, since 2×99281965² = 19713817148522450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14604 + ... + 20293.

It is an arithmetic number, because the mean of its divisors is an integer number (14918895).

Almost surely, 2^99281965 is an apocalyptic number.

It is an amenable number.

99281965 is a deficient number, since it is larger than the sum of its proper divisors (20069195).

99281965 is a wasteful number, since it uses less digits than its factorization.

99281965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35471.

The product of its digits is 349920, while the sum is 49.

The square root of 99281965 is about 9964.0335707985. The cubic root of 99281965 is about 463.0452726420.

The spelling of 99281965 in words is "ninety-nine million, two hundred eighty-one thousand, nine hundred sixty-five".