84870953 has 4 divisors (see below), whose sum is σ = 89863380. Its totient is φ = 79878528.

The previous prime is 84870931. The next prime is 84870959. The reversal of 84870953 is 35907848.

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 74425129 + 10445824 = 8627^2 + 3232^2 .

It is a cyclic number.

It is not a de Polignac number, because 84870953 - 2¹² = 84866857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84870959) 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, 2496188 + ... + 2496221.

It is an arithmetic number, because the mean of its divisors is an integer number (22465845).

Almost surely, 2^84870953 is an apocalyptic number.

It is an amenable number.

84870953 is a deficient number, since it is larger than the sum of its proper divisors (4992427).

84870953 is a wasteful number, since it uses less digits than its factorization.

84870953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992426.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 84870953 is about 9212.5432427750. The cubic root of 84870953 is about 439.4603456228.

The spelling of 84870953 in words is "eighty-four million, eight hundred seventy thousand, nine hundred fifty-three".