84617091 has 24 divisors (see below), whose sum is σ = 132612480. Its totient is φ = 51682176.

The previous prime is 84617087. The next prime is 84617111. The reversal of 84617091 is 19071648.

It is not a de Polignac number, because 84617091 - 2² = 84617087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84617021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13390 + ... + 18668.

It is an arithmetic number, because the mean of its divisors is an integer number (5525520).

Almost surely, 2^84617091 is an apocalyptic number.

84617091 is a deficient number, since it is larger than the sum of its proper divisors (47995389).

84617091 is a wasteful number, since it uses less digits than its factorization.

84617091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435 (or 5432 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 84617091 is about 9198.7548613929. The cubic root of 84617091 is about 439.0217436559.

The spelling of 84617091 in words is "eighty-four million, six hundred seventeen thousand, ninety-one".