3905245439 has 8 divisors (see below), whose sum is σ = 3923187840. Its totient is φ = 3887343000.

The previous prime is 3905245433. The next prime is 3905245493. The reversal of 3905245439 is 9345425093.

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 3905245439 - 2²⁴ = 3888468223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3905245439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3905245433) 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, 195464 + ... + 214514.

It is an arithmetic number, because the mean of its divisors is an integer number (490398480).

Almost surely, 2^3905245439 is an apocalyptic number.

3905245439 is a deficient number, since it is larger than the sum of its proper divisors (17942401).

3905245439 is a wasteful number, since it uses less digits than its factorization.

3905245439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19981.

The product of its (nonzero) digits is 583200, while the sum is 44.

The square root of 3905245439 is about 62491.9629952524. The cubic root of 3905245439 is about 1574.7662962554.

The spelling of 3905245439 in words is "three billion, nine hundred five million, two hundred forty-five thousand, four hundred thirty-nine".