39440403988 has 12 divisors (see below), whose sum is σ = 73080748692. Its totient is φ = 18560190080.

The previous prime is 39440403973. The next prime is 39440404009. The reversal of 39440403988 is 88930404493.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36491696784 + 2948707204 = 191028^2 + 54302^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 290002903 + ... + 290003038.

It is an arithmetic number, because the mean of its divisors is an integer number (6090062391).

Almost surely, 2^39440403988 is an apocalyptic number.

It is an amenable number.

39440403988 is a deficient number, since it is larger than the sum of its proper divisors (33640344704).

39440403988 is a wasteful number, since it uses less digits than its factorization.

39440403988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580005962 (or 580005960 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 39440403988 in words is "thirty-nine billion, four hundred forty million, four hundred three thousand, nine hundred eighty-eight".