40256443 has 8 divisors (see below), whose sum is σ = 40622400. Its totient is φ = 39892608.

The previous prime is 40256429. The next prime is 40256477. The reversal of 40256443 is 34465204.

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 40256443 - 2⁹ = 40255931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40256413) 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, 92755 + ... + 93187.

It is an arithmetic number, because the mean of its divisors is an integer number (5077800).

Almost surely, 2^40256443 is an apocalyptic number.

40256443 is a deficient number, since it is larger than the sum of its proper divisors (365957).

40256443 is a wasteful number, since it uses less digits than its factorization.

40256443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 40256443 is about 6344.7965294405. The cubic root of 40256443 is about 342.7244852944.

The spelling of 40256443 in words is "forty million, two hundred fifty-six thousand, four hundred forty-three".