84825091 has 4 divisors (see below), whose sum is σ = 91350112. Its totient is φ = 78300072.

The previous prime is 84825089. The next prime is 84825109. The reversal of 84825091 is 19052848.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84825091 - 2¹ = 84825089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84825091.

It is not an unprimeable number, because it can be changed into a prime (84825001) 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, 3262491 + ... + 3262516.

It is an arithmetic number, because the mean of its divisors is an integer number (22837528).

Almost surely, 2^84825091 is an apocalyptic number.

84825091 is a deficient number, since it is larger than the sum of its proper divisors (6525021).

84825091 is a wasteful number, since it uses less digits than its factorization.

84825091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525020.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 84825091 is about 9210.0538000600. The cubic root of 84825091 is about 439.3811738093.

The spelling of 84825091 in words is "eighty-four million, eight hundred twenty-five thousand, ninety-one".