40406214 has 8 divisors (see below), whose sum is σ = 80812440. Its totient is φ = 13468736.

The previous prime is 40406167. The next prime is 40406273. The reversal of 40406214 is 41260404.

It is a sphenic number, since it is the product of 3 distinct primes.

40406214 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367179 + ... + 3367190.

It is an arithmetic number, because the mean of its divisors is an integer number (10101555).

Almost surely, 2^40406214 is an apocalyptic number.

40406214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40406214 is a wasteful number, since it uses less digits than its factorization.

40406214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734374.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40406214 is about 6356.5882358385. The cubic root of 40406214 is about 343.1489859842.

Adding to 40406214 its reverse (41260404), we get a palindrome (81666618).

The spelling of 40406214 in words is "forty million, four hundred six thousand, two hundred fourteen".