84209393 has 4 divisors (see below), whose sum is σ = 85224048. Its totient is φ = 83194740.

The previous prime is 84209353. The next prime is 84209413. The reversal of 84209393 is 39390248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84209393 - 2²⁶ = 17100529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84209353) 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, 507203 + ... + 507368.

It is an arithmetic number, because the mean of its divisors is an integer number (21306012).

Almost surely, 2^84209393 is an apocalyptic number.

84209393 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

84209393 is a deficient number, since it is larger than the sum of its proper divisors (1014655).

84209393 is a wasteful number, since it uses less digits than its factorization.

84209393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014654.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 84209393 is about 9176.5676045022. The cubic root of 84209393 is about 438.3155170496.

The spelling of 84209393 in words is "eighty-four million, two hundred nine thousand, three hundred ninety-three".