84598391 has 4 divisors (see below), whose sum is σ = 86884872. Its totient is φ = 82311912.

The previous prime is 84598379. The next prime is 84598403. The reversal of 84598391 is 19389548.

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

It is an interprime number because it is at equal distance from previous prime (84598379) and next prime (84598403).

It is a cyclic number.

It is not a de Polignac number, because 84598391 - 2¹⁴ = 84582007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84598321) 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, 1143185 + ... + 1143258.

It is an arithmetic number, because the mean of its divisors is an integer number (21721218).

Almost surely, 2^84598391 is an apocalyptic number.

84598391 is a deficient number, since it is larger than the sum of its proper divisors (2286481).

84598391 is a wasteful number, since it uses less digits than its factorization.

84598391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286480.

The product of its digits is 311040, while the sum is 47.

The square root of 84598391 is about 9197.7383633152. The cubic root of 84598391 is about 438.9894006570.

The spelling of 84598391 in words is "eighty-four million, five hundred ninety-eight thousand, three hundred ninety-one".