40406764 has 12 divisors (see below), whose sum is σ = 72993088. Its totient is φ = 19551600.

The previous prime is 40406761. The next prime is 40406789. The reversal of 40406764 is 46760404.

40406764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (40406761) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 162807 + ... + 163054.

Almost surely, 2^40406764 is an apocalyptic number.

It is an amenable number.

40406764 is a deficient number, since it is larger than the sum of its proper divisors (32586324).

40406764 is a wasteful number, since it uses less digits than its factorization.

40406764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325896 (or 325894 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 40406764 is about 6356.6314978926. The cubic root of 40406764 is about 343.1505429319.

The spelling of 40406764 in words is "forty million, four hundred six thousand, seven hundred sixty-four".