99455 has 4 divisors (see below), whose sum is σ = 119352. Its totient is φ = 79560.

The previous prime is 99439. The next prime is 99469. The reversal of 99455 is 55499.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 99455 - 2⁴ = 99439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99455.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9941 + ... + 9950.

It is an arithmetic number, because the mean of its divisors is an integer number (29838).

2⁹⁹⁴⁵⁵ is an apocalyptic number.

99455 is a deficient number, since it is larger than the sum of its proper divisors (19897).

99455 is a wasteful number, since it uses less digits than its factorization.

99455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19896.

The product of its digits is 8100, while the sum is 32.

The square root of 99455 is about 315.3648680497. The cubic root of 99455 is about 46.3314124882.

Subtracting from 99455 its reverse (55499), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 99455 in words is "ninety-nine thousand, four hundred fifty-five".