84491845 has 8 divisors (see below), whose sum is σ = 102120480. Its totient is φ = 67106640.

The previous prime is 84491837. The next prime is 84491851. The reversal of 84491845 is 54819448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84491845 - 2³ = 84491837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60091 + ... + 61480.

It is an arithmetic number, because the mean of its divisors is an integer number (12765060).

Almost surely, 2^84491845 is an apocalyptic number.

It is an amenable number.

84491845 is a deficient number, since it is larger than the sum of its proper divisors (17628635).

84491845 is a wasteful number, since it uses less digits than its factorization.

84491845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121715.

The product of its digits is 184320, while the sum is 43.

The square root of 84491845 is about 9191.9445711993. The cubic root of 84491845 is about 438.8050306648.

The spelling of 84491845 in words is "eighty-four million, four hundred ninety-one thousand, eight hundred forty-five".