40040810404 has 27 divisors (see below), whose sum is σ = 81517353057. Its totient is φ = 17159146704.

The previous prime is 40040810399. The next prime is 40040810437. The reversal of 40040810404 is 40401804004.

It is a happy number.

The square root of 40040810404 is 200102.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 139948900 + 39900861504 = 11830^2 + 199752^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2794282 + ... + 2808574.

Almost surely, 2^40040810404 is an apocalyptic number.

40040810404 is the 200102-nd square number.

It is an amenable number.

40040810404 is an abundant number, since it is smaller than the sum of its proper divisors (41476542653).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40040810404 is an frugal number, since it uses more digits than its factorization.

40040810404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28604 (or 14302 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Multiplying 40040810404 by its sum of digits (25), we get a square (1001020260100 = 1000510²).

The spelling of 40040810404 in words is "forty billion, forty million, eight hundred ten thousand, four hundred four".