39478477756 has 12 divisors (see below), whose sum is σ = 69131435968. Its totient is φ = 19726638912.

The previous prime is 39478477729. The next prime is 39478477757. The reversal of 39478477756 is 65777487493.

It is a junction number, because it is equal to n+sod(n) for n = 39478477691 and 39478477700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39478477757) by changing a digit.

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, 3142941 + ... + 3155476.

Almost surely, 2^39478477756 is an apocalyptic number.

It is an amenable number.

39478477756 is a deficient number, since it is larger than the sum of its proper divisors (29652958212).

39478477756 is a wasteful number, since it uses less digits than its factorization.

39478477756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299988 (or 6299986 counting only the distinct ones).

The product of its digits is 248935680, while the sum is 67.

The spelling of 39478477756 in words is "thirty-nine billion, four hundred seventy-eight million, four hundred seventy-seven thousand, seven hundred fifty-six".