84821493 has 8 divisors (see below), whose sum is σ = 118012608. Its totient is φ = 54089024.

The previous prime is 84821441. The next prime is 84821507. The reversal of 84821493 is 39412848.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84821493 - 2⁸ = 84821237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84820493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614580 + ... + 614717.

It is an arithmetic number, because the mean of its divisors is an integer number (14751576).

Almost surely, 2^84821493 is an apocalyptic number.

It is an amenable number.

84821493 is a deficient number, since it is larger than the sum of its proper divisors (33191115).

84821493 is a wasteful number, since it uses less digits than its factorization.

84821493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229323.

The product of its digits is 55296, while the sum is 39.

The square root of 84821493 is about 9209.8584679679. The cubic root of 84821493 is about 439.3749613558.

The spelling of 84821493 in words is "eighty-four million, eight hundred twenty-one thousand, four hundred ninety-three".