40040764 has 24 divisors (see below), whose sum is σ = 74264400. Its totient is φ = 18856320.

The previous prime is 40040761. The next prime is 40040773. The reversal of 40040764 is 46704004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547 + ... + 8965.

It is an arithmetic number, because the mean of its divisors is an integer number (3094350).

Almost surely, 2^40040764 is an apocalyptic number.

It is an amenable number.

40040764 is a deficient number, since it is larger than the sum of its proper divisors (34223636).

40040764 is a wasteful number, since it uses less digits than its factorization.

40040764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8493 (or 8491 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40040764 is about 6327.7771768608. Note that the first 3 decimals coincide. The cubic root of 40040764 is about 342.1113256586. Note that the first 3 decimals are identical.

Adding to 40040764 its reverse (46704004), we get a palindrome (86744768).

It can be divided in two parts, 40040 and 764, that added together give a palindrome (40804).

The spelling of 40040764 in words is "forty million, forty thousand, seven hundred sixty-four".