40829685 has 32 divisors (see below), whose sum is σ = 72266880. Its totient is φ = 19554048.

The previous prime is 40829683. The next prime is 40829693. The reversal of 40829685 is 58692804.

It is not a de Polignac number, because 40829685 - 2¹ = 40829683 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40829683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4386 + ... + 10044.

It is an arithmetic number, because the mean of its divisors is an integer number (2258340).

Almost surely, 2^40829685 is an apocalyptic number.

It is an amenable number.

40829685 is a deficient number, since it is larger than the sum of its proper divisors (31437195).

40829685 is a wasteful number, since it uses less digits than its factorization.

40829685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 40829685 is about 6389.8110300697. The cubic root of 40829685 is about 344.3435954226.

It can be divided in two parts, 40829 and 685, that added together give a palindrome (41514).

The spelling of 40829685 in words is "forty million, eight hundred twenty-nine thousand, six hundred eighty-five".