4481139394 has 4 divisors (see below), whose sum is σ = 6721709094. Its totient is φ = 2240569696.

The previous prime is 4481139367. The next prime is 4481139499. The reversal of 4481139394 is 4939311844.

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

It can be written as a sum of positive squares in only one way, i.e., 4387340169 + 93799225 = 66237^2 + 9685^2 .

It is a super-2 number, since 2×4481139394² = 40161220536917374472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120284847 + ... + 1120284850.

Almost surely, 2^4481139394 is an apocalyptic number.

4481139394 is a deficient number, since it is larger than the sum of its proper divisors (2240569700).

4481139394 is a wasteful number, since it uses less digits than its factorization.

4481139394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240569699.

The product of its digits is 373248, while the sum is 46.

The square root of 4481139394 is about 66941.3130585291. The cubic root of 4481139394 is about 1648.6538630695.

The spelling of 4481139394 in words is "four billion, four hundred eighty-one million, one hundred thirty-nine thousand, three hundred ninety-four".