84408091 has 8 divisors (see below), whose sum is σ = 88174080. Its totient is φ = 80650152.

The previous prime is 84408073. The next prime is 84408109. The reversal of 84408091 is 19080448.

It is an interprime number because it is at equal distance from previous prime (84408073) and next prime (84408109).

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

It is a cyclic number.

It is not a de Polignac number, because 84408091 - 2⁷ = 84407963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84408001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31440 + ... + 34018.

It is an arithmetic number, because the mean of its divisors is an integer number (11021760).

Almost surely, 2^84408091 is an apocalyptic number.

84408091 is a deficient number, since it is larger than the sum of its proper divisors (3765989).

84408091 is a wasteful number, since it uses less digits than its factorization.

84408091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 84408091 is about 9187.3876047547. The cubic root of 84408091 is about 438.6599917094.

The spelling of 84408091 in words is "eighty-four million, four hundred eight thousand, ninety-one".