40856479 has 4 divisors (see below), whose sum is σ = 43006840. Its totient is φ = 38706120.

The previous prime is 40856467. The next prime is 40856513. The reversal of 40856479 is 97465804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40856479 - 2¹¹ = 40854431 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 (40856449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075152 + ... + 1075189.

It is an arithmetic number, because the mean of its divisors is an integer number (10751710).

Almost surely, 2^40856479 is an apocalyptic number.

40856479 is a deficient number, since it is larger than the sum of its proper divisors (2150361).

40856479 is a wasteful number, since it uses less digits than its factorization.

40856479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150360.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 40856479 is about 6391.9073053354. The cubic root of 40856479 is about 344.4189027617.

The spelling of 40856479 in words is "forty million, eight hundred fifty-six thousand, four hundred seventy-nine".