8145745439 has 8 divisors (see below), whose sum is σ = 8895896352. Its totient is φ = 7413245280.

The previous prime is 8145745427. The next prime is 8145745441. The reversal of 8145745439 is 9345475418.

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 a de Polignac number, because none of the positive numbers 2^k-8145745439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145745409) 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, 4411724 + ... + 4413569.

It is an arithmetic number, because the mean of its divisors is an integer number (1111987044).

Almost surely, 2^8145745439 is an apocalyptic number.

8145745439 is a deficient number, since it is larger than the sum of its proper divisors (750150913).

8145745439 is a wasteful number, since it uses less digits than its factorization.

8145745439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825377.

The product of its digits is 2419200, while the sum is 50.

The square root of 8145745439 is about 90253.7835162604. The cubic root of 8145745439 is about 2012.0724347857.

The spelling of 8145745439 in words is "eight billion, one hundred forty-five million, seven hundred forty-five thousand, four hundred thirty-nine".