38447489956 has 12 divisors (see below), whose sum is σ = 67392872092. Its totient is φ = 19192383648.

The previous prime is 38447489923. The next prime is 38447489999. The reversal of 38447489956 is 65998474483.

It can be written as a sum of positive squares in 2 ways, for example, as 2684897856 + 35762592100 = 51816^2 + 189110^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38447489891 and 38447489900.

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, 7837575 + ... + 7842478.

Almost surely, 2^38447489956 is an apocalyptic number.

It is an amenable number.

38447489956 is a deficient number, since it is larger than the sum of its proper divisors (28945382136).

38447489956 is a wasteful number, since it uses less digits than its factorization.

38447489956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15680670 (or 15680668 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 67.

The spelling of 38447489956 in words is "thirty-eight billion, four hundred forty-seven million, four hundred eighty-nine thousand, nine hundred fifty-six".