84857453 has 4 divisors (see below), whose sum is σ = 84986880. Its totient is φ = 84728028.

The previous prime is 84857449. The next prime is 84857459. The reversal of 84857453 is 35475848.

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 84857453 - 2² = 84857449 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 (84857459) 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, 63725 + ... + 65042.

It is an arithmetic number, because the mean of its divisors is an integer number (21246720).

Almost surely, 2^84857453 is an apocalyptic number.

It is an amenable number.

84857453 is a deficient number, since it is larger than the sum of its proper divisors (129427).

84857453 is a wasteful number, since it uses less digits than its factorization.

84857453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129426.

The product of its digits is 537600, while the sum is 44.

The square root of 84857453 is about 9211.8105169397. The cubic root of 84857453 is about 439.4370434641.

The spelling of 84857453 in words is "eighty-four million, eight hundred fifty-seven thousand, four hundred fifty-three".