84854389 has 4 divisors (see below), whose sum is σ = 85040524. Its totient is φ = 84668256.

The previous prime is 84854381. The next prime is 84854417. The reversal of 84854389 is 98345848.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36663025 + 48191364 = 6055^2 + 6942^2 .

It is a cyclic number.

It is not a de Polignac number, because 84854389 - 2³ = 84854381 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 (84854381) 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, 92382 + ... + 93295.

It is an arithmetic number, because the mean of its divisors is an integer number (21260131).

Almost surely, 2^84854389 is an apocalyptic number.

It is an amenable number.

84854389 is a deficient number, since it is larger than the sum of its proper divisors (186135).

84854389 is a wasteful number, since it uses less digits than its factorization.

84854389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186134.

The product of its digits is 1105920, while the sum is 49.

The square root of 84854389 is about 9211.6442071978. The cubic root of 84854389 is about 439.4317543930.

The spelling of 84854389 in words is "eighty-four million, eight hundred fifty-four thousand, three hundred eighty-nine".