4001439745 has 8 divisors (see below), whose sum is σ = 4805054784. Its totient is φ = 3198933744.

The previous prime is 4001439721. The next prime is 4001439791. The reversal of 4001439745 is 5479341004.

4001439745 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4001439745 - 2¹¹ = 4001437697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269299 + ... + 283768.

It is an arithmetic number, because the mean of its divisors is an integer number (600631848).

Almost surely, 2^4001439745 is an apocalyptic number.

It is an amenable number.

4001439745 is a deficient number, since it is larger than the sum of its proper divisors (803615039).

4001439745 is a wasteful number, since it uses less digits than its factorization.

4001439745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554519.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 4001439745 is about 63256.9343629613. The cubic root of 4001439745 is about 1587.5914835163.

The spelling of 4001439745 in words is "four billion, one million, four hundred thirty-nine thousand, seven hundred forty-five".