40386934 has 16 divisors (see below), whose sum is σ = 73307808. Its totient is φ = 16290432.

The previous prime is 40386923. The next prime is 40386947. The reversal of 40386934 is 43968304.

It is a super-2 number, since 2×40386934² = 3262208875840712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40386893 and 40386902.

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 7 ways as a sum of consecutive naturals, for example, 84609 + ... + 85084.

It is an arithmetic number, because the mean of its divisors is an integer number (4581738).

Almost surely, 2^40386934 is an apocalyptic number.

40386934 is a deficient number, since it is larger than the sum of its proper divisors (32920874).

40386934 is a wasteful number, since it uses less digits than its factorization.

40386934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169719.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 40386934 is about 6355.0715180870. The cubic root of 40386934 is about 343.0943989595.

The spelling of 40386934 in words is "forty million, three hundred eighty-six thousand, nine hundred thirty-four".