40684229 has 4 divisors (see below), whose sum is σ = 40793676. Its totient is φ = 40574784.

The previous prime is 40684223. The next prime is 40684271. The reversal of 40684229 is 92248604.

40684229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12061729 + 28622500 = 3473^2 + 5350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40684229 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 (40684223) 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 3 ways as a sum of consecutive naturals, for example, 54164 + ... + 54909.

It is an arithmetic number, because the mean of its divisors is an integer number (10198419).

Almost surely, 2^40684229 is an apocalyptic number.

It is an amenable number.

40684229 is a deficient number, since it is larger than the sum of its proper divisors (109447).

40684229 is a wasteful number, since it uses less digits than its factorization.

40684229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109446.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 40684229 is about 6378.4190047378. The cubic root of 40684229 is about 343.9342001648.

The spelling of 40684229 in words is "forty million, six hundred eighty-four thousand, two hundred twenty-nine".