4391985745 has 8 divisors (see below), whose sum is σ = 6023294784. Its totient is φ = 3011647344.

The previous prime is 4391985743. The next prime is 4391985757. The reversal of 4391985745 is 5475891934.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4391985745 - 2¹ = 4391985743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4391985743) 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, 62742619 + ... + 62742688.

It is an arithmetic number, because the mean of its divisors is an integer number (752911848).

Almost surely, 2^4391985745 is an apocalyptic number.

It is an amenable number.

4391985745 is a deficient number, since it is larger than the sum of its proper divisors (1631309039).

4391985745 is a wasteful number, since it uses less digits than its factorization.

4391985745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125485319.

The product of its digits is 5443200, while the sum is 55.

The square root of 4391985745 is about 66272.0585541146. The cubic root of 4391985745 is about 1637.6470502521.

The spelling of 4391985745 in words is "four billion, three hundred ninety-one million, nine hundred eighty-five thousand, seven hundred forty-five".