40005235444 has 6 divisors (see below), whose sum is σ = 70009162034. Its totient is φ = 20002617720.

The previous prime is 40005235427. The next prime is 40005235463. The reversal of 40005235444 is 44453250004.

It can be written as a sum of positive squares in only one way, i.e., 39992000400 + 13235044 = 199980^2 + 3638^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000654427 + ... + 5000654434.

Almost surely, 2^40005235444 is an apocalyptic number.

It is an amenable number.

40005235444 is a deficient number, since it is larger than the sum of its proper divisors (30003926590).

40005235444 is a wasteful number, since it uses less digits than its factorization.

40005235444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001308865 (or 10001308863 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 40005235444 its reverse (44453250004), we get a palindrome (84458485448).

The spelling of 40005235444 in words is "forty billion, five million, two hundred thirty-five thousand, four hundred forty-four".