40386406 has 8 divisors (see below), whose sum is σ = 60707520. Its totient is φ = 20150568.

The previous prime is 40386361. The next prime is 40386421. The reversal of 40386406 is 60468304.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20121 + ... + 22036.

It is an arithmetic number, because the mean of its divisors is an integer number (7588440).

Almost surely, 2^40386406 is an apocalyptic number.

40386406 is a deficient number, since it is larger than the sum of its proper divisors (20321114).

40386406 is a wasteful number, since it uses less digits than its factorization.

40386406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42638.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 40386406 is about 6355.0299763258. The cubic root of 40386406 is about 343.0929038008.

The spelling of 40386406 in words is "forty million, three hundred eighty-six thousand, four hundred six".