40256479 has 8 divisors (see below), whose sum is σ = 40869360. Its totient is φ = 39648000.

The previous prime is 40256477. The next prime is 40256501. The reversal of 40256479 is 97465204.

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 40256479 - 2¹ = 40256477 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 (40256477) 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, 20367 + ... + 22255.

It is an arithmetic number, because the mean of its divisors is an integer number (5108670).

Almost surely, 2^40256479 is an apocalyptic number.

40256479 is a deficient number, since it is larger than the sum of its proper divisors (612881).

40256479 is a wasteful number, since it uses less digits than its factorization.

40256479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 40256479 is about 6344.7993664103. The cubic root of 40256479 is about 342.7245874568.

The spelling of 40256479 in words is "forty million, two hundred fifty-six thousand, four hundred seventy-nine".