4089256545 has 32 divisors (see below), whose sum is σ = 7143966720. Its totient is φ = 1980904640.

The previous prime is 4089256541. The next prime is 4089256553. The reversal of 4089256545 is 5456529804.

It is not a de Polignac number, because 4089256545 - 2² = 4089256541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4089256494 and 4089256503.

It is not an unprimeable number, because it can be changed into a prime (4089256541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185416 + ... + 206294.

It is an arithmetic number, because the mean of its divisors is an integer number (223248960).

Almost surely, 2^4089256545 is an apocalyptic number.

It is an amenable number.

4089256545 is a deficient number, since it is larger than the sum of its proper divisors (3054710175).

4089256545 is a wasteful number, since it uses less digits than its factorization.

4089256545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22085.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The square root of 4089256545 is about 63947.2950561632. The cubic root of 4089256545 is about 1599.1214636605.

The spelling of 4089256545 in words is "four billion, eighty-nine million, two hundred fifty-six thousand, five hundred forty-five".