84405299 has 4 divisors (see below), whose sum is σ = 92078520. Its totient is φ = 76732080.

The previous prime is 84405271. The next prime is 84405311. The reversal of 84405299 is 99250448.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84405299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84405199) 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, 3836594 + ... + 3836615.

It is an arithmetic number, because the mean of its divisors is an integer number (23019630).

Almost surely, 2^84405299 is an apocalyptic number.

84405299 is a deficient number, since it is larger than the sum of its proper divisors (7673221).

84405299 is a wasteful number, since it uses less digits than its factorization.

84405299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7673220.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 84405299 is about 9187.2356560611. The cubic root of 84405299 is about 438.6551550791.

The spelling of 84405299 in words is "eighty-four million, four hundred five thousand, two hundred ninety-nine".