84870923 has 2 divisors, whose sum is σ = 84870924. Its totient is φ = 84870922.

The previous prime is 84870917. The next prime is 84870931. The reversal of 84870923 is 32907848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84870923 - 2¹² = 84866827 is a prime.

It is not a weakly prime, because it can be changed into another prime (84870223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42435461 + 42435462.

It is an arithmetic number, because the mean of its divisors is an integer number (42435462).

Almost surely, 2^84870923 is an apocalyptic number.

84870923 is a deficient number, since it is larger than the sum of its proper divisors (1).

84870923 is an equidigital number, since it uses as much as digits as its factorization.

84870923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 84870923 is about 9212.5416145600. The cubic root of 84870923 is about 439.4602938430.

The spelling of 84870923 in words is "eighty-four million, eight hundred seventy thousand, nine hundred twenty-three".