84470999 has 2 divisors, whose sum is σ = 84471000. Its totient is φ = 84470998.

The previous prime is 84470993. The next prime is 84471007. The reversal of 84470999 is 99907448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84470999 - 2⁴ = 84470983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84470993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42235499 + 42235500.

It is an arithmetic number, because the mean of its divisors is an integer number (42235500).

Almost surely, 2^84470999 is an apocalyptic number.

84470999 is a deficient number, since it is larger than the sum of its proper divisors (1).

84470999 is an equidigital number, since it uses as much as digits as its factorization.

84470999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 84470999 is about 9190.8105736110. The cubic root of 84470999 is about 438.7689400730.

The spelling of 84470999 in words is "eighty-four million, four hundred seventy thousand, nine hundred ninety-nine".