4644398086 has 4 divisors (see below), whose sum is σ = 6966597132. Its totient is φ = 2322199042.

The previous prime is 4644398081. The next prime is 4644398117. The reversal of 4644398086 is 6808934464.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4644398081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1161099520 + ... + 1161099523.

It is an arithmetic number, because the mean of its divisors is an integer number (1741649283).

Almost surely, 2^4644398086 is an apocalyptic number.

4644398086 is a deficient number, since it is larger than the sum of its proper divisors (2322199046).

4644398086 is a wasteful number, since it uses less digits than its factorization.

4644398086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322199045.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The square root of 4644398086 is about 68149.8208801755. The cubic root of 4644398086 is about 1668.4370003166.

The spelling of 4644398086 in words is "four billion, six hundred forty-four million, three hundred ninety-eight thousand, eighty-six".