99223965 has 12 divisors (see below), whose sum is σ = 171988284. Its totient is φ = 52919424.

The previous prime is 99223961. The next prime is 99223967. The reversal of 99223965 is 56932299.

It can be written as a sum of positive squares in 2 ways, for example, as 20848356 + 78375609 = 4566^2 + 8853^2 .

It is not a de Polignac number, because 99223965 - 2² = 99223961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2204977 = 99223965 / (9 + 9 + 2 + 2 + 3 + 9 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 99223965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99223961) 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, 1102444 + ... + 1102533.

It is an arithmetic number, because the mean of its divisors is an integer number (14332357).

Almost surely, 2^99223965 is an apocalyptic number.

It is an amenable number.

99223965 is a deficient number, since it is larger than the sum of its proper divisors (72764319).

99223965 is a wasteful number, since it uses less digits than its factorization.

99223965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204988 (or 2204985 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 99223965 is about 9961.1226776905. The cubic root of 99223965 is about 462.9550855426.

The spelling of 99223965 in words is "ninety-nine million, two hundred twenty-three thousand, nine hundred sixty-five".