4449338678 has 4 divisors (see below), whose sum is σ = 6674008020. Its totient is φ = 2224669338.

The previous prime is 4449338671. The next prime is 4449338683. The reversal of 4449338678 is 8768339444.

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

It is a super-2 number, since 2×4449338678² = 39593229343093575368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4449338671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112334668 + ... + 1112334671.

It is an arithmetic number, because the mean of its divisors is an integer number (1668502005).

Almost surely, 2^4449338678 is an apocalyptic number.

4449338678 is a deficient number, since it is larger than the sum of its proper divisors (2224669342).

4449338678 is a wasteful number, since it uses less digits than its factorization.

4449338678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224669341.

The product of its digits is 13934592, while the sum is 56.

The square root of 4449338678 is about 66703.3633185014. The cubic root of 4449338678 is about 1644.7446723876.

The spelling of 4449338678 in words is "four billion, four hundred forty-nine million, three hundred thirty-eight thousand, six hundred seventy-eight".