40293986 has 16 divisors (see below), whose sum is σ = 62726400. Its totient is φ = 19392240.

The previous prime is 40293971. The next prime is 40294013. The reversal of 40293986 is 68939204.

It is a happy number.

40293986 is nontrivially palindromic in base 16.

40293986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10565 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (3920400).

Almost surely, 2^40293986 is an apocalyptic number.

40293986 is a deficient number, since it is larger than the sum of its proper divisors (22432414).

40293986 is a wasteful number, since it uses less digits than its factorization.

40293986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 40293986 is about 6347.7544060872. The cubic root of 40293986 is about 342.8309933595.

The spelling of 40293986 in words is "forty million, two hundred ninety-three thousand, nine hundred eighty-six".