84857967 has 12 divisors (see below), whose sum is σ = 123125184. Its totient is φ = 56316960.

The previous prime is 84857953. The next prime is 84858019. The reversal of 84857967 is 76975848.

84857967 is a `hidden beast` number, since 8 + 4 + 8 + 579 + 67 = 666.

It is not a de Polignac number, because 84857967 - 2⁴ = 84857951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84857467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19134 + ... + 23147.

It is an arithmetic number, because the mean of its divisors is an integer number (10260432).

Almost surely, 2^84857967 is an apocalyptic number.

84857967 is a deficient number, since it is larger than the sum of its proper divisors (38267217).

84857967 is a wasteful number, since it uses less digits than its factorization.

84857967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42510 (or 42507 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 84857967 is about 9211.8384158647. The cubic root of 84857967 is about 439.4379307174.

The spelling of 84857967 in words is "eighty-four million, eight hundred fifty-seven thousand, nine hundred sixty-seven".