40684369 has 16 divisors (see below), whose sum is σ = 46103040. Its totient is φ = 35568000.

The previous prime is 40684351. The next prime is 40684379. The reversal of 40684369 is 96348604.

40684369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40684369 - 2⁹ = 40683857 is a prime.

It is a super-2 number, since 2×40684369² = 3310435761856322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40684379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77829 + ... + 78349.

It is an arithmetic number, because the mean of its divisors is an integer number (2881440).

Almost surely, 2^40684369 is an apocalyptic number.

It is an amenable number.

40684369 is a deficient number, since it is larger than the sum of its proper divisors (5418671).

40684369 is a wasteful number, since it uses less digits than its factorization.

40684369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 40684369 is about 6378.4299792347. The cubic root of 40684369 is about 343.9345946726.

The spelling of 40684369 in words is "forty million, six hundred eighty-four thousand, three hundred sixty-nine".