4001345 has 8 divisors (see below), whose sum is σ = 4904064. Its totient is φ = 3132784.

The previous prime is 4001339. The next prime is 4001357. The reversal of 4001345 is 5431004.

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 4001345 - 2⁸ = 4001089 is a prime.

It is a Duffinian number.

It is a Curzon 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, 8279 + ... + 8748.

It is an arithmetic number, because the mean of its divisors is an integer number (613008).

Almost surely, 2^4001345 is an apocalyptic number.

It is an amenable number.

4001345 is a deficient number, since it is larger than the sum of its proper divisors (902719).

4001345 is a wasteful number, since it uses less digits than its factorization.

4001345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17079.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 4001345 is about 2000.3362217387. The cubic root of 4001345 is about 158.7578953231.

Adding to 4001345 its reverse (5431004), we get a palindrome (9432349).

The spelling of 4001345 in words is "four million, one thousand, three hundred forty-five".