4393781349 has 8 divisors (see below), whose sum is σ = 5859183360. Its totient is φ = 2928783456.

The previous prime is 4393781347. The next prime is 4393781363. The reversal of 4393781349 is 9431873934.

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

It is not a de Polignac number, because 4393781349 - 2¹ = 4393781347 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4393781341) 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, 74677 + ... + 119850.

It is an arithmetic number, because the mean of its divisors is an integer number (732397920).

Almost surely, 2^4393781349 is an apocalyptic number.

It is an amenable number.

4393781349 is a deficient number, since it is larger than the sum of its proper divisors (1465402011).

4393781349 is a wasteful number, since it uses less digits than its factorization.

4393781349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202059.

The product of its digits is 1959552, while the sum is 51.

The square root of 4393781349 is about 66285.6043873781. The cubic root of 4393781349 is about 1637.8701964642.

It can be divided in two parts, 4393781 and 349, that added together give a triangular number (4394130 = T₂₉₆₄).

The spelling of 4393781349 in words is "four billion, three hundred ninety-three million, seven hundred eighty-one thousand, three hundred forty-nine".