40400000438 has 32 divisors (see below), whose sum is σ = 73359820800. Its totient is φ = 16289414784.

The previous prime is 40400000423. The next prime is 40400000441. The reversal of 40400000438 is 83400000404.

40400000438 is a modest number, since divided by 438 gives 404 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600923 + ... + 664761.

It is an arithmetic number, because the mean of its divisors is an integer number (2292494400).

Almost surely, 2^40400000438 is an apocalyptic number.

40400000438 is a deficient number, since it is larger than the sum of its proper divisors (32959820362).

40400000438 is a wasteful number, since it uses less digits than its factorization.

40400000438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66524.

The product of its (nonzero) digits is 1536, while the sum is 23.

The spelling of 40400000438 in words is "forty billion, four hundred million, four hundred thirty-eight", and thus it is an aban number.