8634491394 has 8 divisors (see below), whose sum is σ = 17268982800. Its totient is φ = 2878163796.

The previous prime is 8634491323. The next prime is 8634491413. The reversal of 8634491394 is 4931944368.

It is a happy number.

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

8634491394 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719540944 + ... + 719540955.

It is an arithmetic number, because the mean of its divisors is an integer number (2158622850).

Almost surely, 2^8634491394 is an apocalyptic number.

8634491394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8634491394 is a wasteful number, since it uses less digits than its factorization.

8634491394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439081904.

The product of its digits is 2239488, while the sum is 51.

The square root of 8634491394 is about 92921.9640020593. The cubic root of 8634491394 is about 2051.5349514588.

The spelling of 8634491394 in words is "eight billion, six hundred thirty-four million, four hundred ninety-one thousand, three hundred ninety-four".