99964 has 12 divisors (see below), whose sum is σ = 178024. Its totient is φ = 49104.

The previous prime is 99961. The next prime is 99971. The reversal of 99964 is 46999.

It is a plaindrome in base 13.

It is a nialpdrome in base 10.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82 + ... + 454.

2⁹⁹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

99964 is a deficient number, since it is larger than the sum of its proper divisors (78060).

99964 is a wasteful number, since it uses less digits than its factorization.

99964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 442 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 99964 is about 316.1708398951. The cubic root of 99964 is about 46.4103177610.

Adding to 99964 its sum of digits (37), we get a palindrome (100001).

It can be divided in two parts, 9996 and 4, that added together give a 4-th power (10000 = 10⁴).

The spelling of 99964 in words is "ninety-nine thousand, nine hundred sixty-four".