84119857 has 4 divisors (see below), whose sum is σ = 84184576. Its totient is φ = 84055140.

The previous prime is 84119839. The next prime is 84119891. The reversal of 84119857 is 75891148.

It is a happy number.

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 84119857 - 2⁷ = 84119729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84119557) 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, 30369 + ... + 33022.

It is an arithmetic number, because the mean of its divisors is an integer number (21046144).

Almost surely, 2^84119857 is an apocalyptic number.

It is an amenable number.

84119857 is a deficient number, since it is larger than the sum of its proper divisors (64719).

84119857 is a wasteful number, since it uses less digits than its factorization.

84119857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64718.

The product of its digits is 80640, while the sum is 43.

The square root of 84119857 is about 9171.6877945120. The cubic root of 84119857 is about 438.1601150051.

The spelling of 84119857 in words is "eighty-four million, one hundred nineteen thousand, eight hundred fifty-seven".