63984091 has 8 divisors (see below), whose sum is σ = 68027040. Its totient is φ = 60046272.

The previous prime is 63984079. The next prime is 63984097. The reversal of 63984091 is 19048936.

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 63984091 - 2²¹ = 61886939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63984097) 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, 25026 + ... + 27463.

It is an arithmetic number, because the mean of its divisors is an integer number (8503380).

Almost surely, 2^63984091 is an apocalyptic number.

63984091 is a deficient number, since it is larger than the sum of its proper divisors (4042949).

63984091 is a wasteful number, since it uses less digits than its factorization.

63984091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52565.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 63984091 is about 7999.0056257012. The cubic root of 63984091 is about 399.9668535034.

The spelling of 63984091 in words is "sixty-three million, nine hundred eighty-four thousand, ninety-one".