40859646 has 16 divisors (see below), whose sum is σ = 81984144. Its totient is φ = 13575744.

The previous prime is 40859641. The next prime is 40859681. The reversal of 40859646 is 64695804.

It is a junction number, because it is equal to n+sod(n) for n = 40859598 and 40859607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40859641) 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, 9001 + ... + 12756.

It is an arithmetic number, because the mean of its divisors is an integer number (5124009).

Almost surely, 2^40859646 is an apocalyptic number.

40859646 is an abundant number, since it is smaller than the sum of its proper divisors (41124498).

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

40859646 is a wasteful number, since it uses less digits than its factorization.

40859646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22075.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 40859646 is about 6392.1550356668. The cubic root of 40859646 is about 344.4278017704.

It can be divided in two parts, 4085 and 9646, that added together give a palindrome (13731).

The spelling of 40859646 in words is "forty million, eight hundred fifty-nine thousand, six hundred forty-six".