4256209494 has 36 divisors (see below), whose sum is σ = 9732704436. Its totient is φ = 1344064104.

The previous prime is 4256209483. The next prime is 4256209537. The reversal of 4256209494 is 4949026524.

4256209494 is a `hidden beast` number, since 42 + 562 + 0 + 9 + 49 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 321004 + ... + 333999.

It is an arithmetic number, because the mean of its divisors is an integer number (270352901).

Almost surely, 2^4256209494 is an apocalyptic number.

4256209494 is an abundant number, since it is smaller than the sum of its proper divisors (5476494942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4256209494 is a wasteful number, since it uses less digits than its factorization.

4256209494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655049 (or 655027 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 4256209494 is about 65239.6313141023. The cubic root of 4256209494 is about 1620.5943932246.

The spelling of 4256209494 in words is "four billion, two hundred fifty-six million, two hundred nine thousand, four hundred ninety-four".