40400040364 has 12 divisors (see below), whose sum is σ = 71595008800. Its totient is φ = 19944323568.

The previous prime is 40400040361. The next prime is 40400040407. The reversal of 40400040364 is 46304000404.

It is a happy number.

It is a super-2 number, since 2×40400040364² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40400040361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63923799 + ... + 63924430.

Almost surely, 2^40400040364 is an apocalyptic number.

It is an amenable number.

40400040364 is a deficient number, since it is larger than the sum of its proper divisors (31194968436).

40400040364 is a wasteful number, since it uses less digits than its factorization.

40400040364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127848312 (or 127848310 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 40400040364 its reverse (46304000404), we get a palindrome (86704040768).

It can be divided in two parts, 40400040 and 364, that added together give a palindrome (40400404).

The spelling of 40400040364 in words is "forty billion, four hundred million, forty thousand, three hundred sixty-four".