84200491 has 4 divisors (see below), whose sum is σ = 85266400. Its totient is φ = 83134584.

The previous prime is 84200489. The next prime is 84200503. The reversal of 84200491 is 19400248.

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

It is a cyclic number.

It is not a de Polignac number, because 84200491 - 2¹ = 84200489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84209491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532836 + ... + 532993.

It is an arithmetic number, because the mean of its divisors is an integer number (21316600).

Almost surely, 2^84200491 is an apocalyptic number.

84200491 is a deficient number, since it is larger than the sum of its proper divisors (1065909).

84200491 is a wasteful number, since it uses less digits than its factorization.

84200491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065908.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 84200491 is about 9176.0825519390. The cubic root of 84200491 is about 438.3000713370.

The spelling of 84200491 in words is "eighty-four million, two hundred thousand, four hundred ninety-one".