40392906 has 8 divisors (see below), whose sum is σ = 80785824. Its totient is φ = 13464300.

The previous prime is 40392887. The next prime is 40392931. The reversal of 40392906 is 60929304.

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

40392906 is an admirable number.

It is a Curzon 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, 3366070 + ... + 3366081.

It is an arithmetic number, because the mean of its divisors is an integer number (10098228).

Almost surely, 2^40392906 is an apocalyptic number.

40392906 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.

40392906 is a wasteful number, since it uses less digits than its factorization.

40392906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732156.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 40392906 is about 6355.5413616780. The cubic root of 40392906 is about 343.1113092039. Note that the first 3 decimals are identical.

The spelling of 40392906 in words is "forty million, three hundred ninety-two thousand, nine hundred six".