39049488583681 has 3 divisors (see below), whose sum is σ = 39049494832641. Its totient is φ = 39049482334722.

The previous prime is 39049488583627. The next prime is 39049488583717. The reversal of 39049488583681 is 18638588494093.

The square root of 39049488583681 is 6248959.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-39049488583681 is a prime.

It is a super-2 number, since 2×39049488583681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39049488583598 and 39049488583607.

It is not an unprimeable number, because it can be changed into a prime (39049488583381) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3124480 + ... + 9373438.

It is an arithmetic number, because the mean of its divisors is an integer number (13016498277547).

Almost surely, 2^{39049488583681} is an apocalyptic number.

39049488583681 is the 6248959-th square number.

39049488583681 is the 3124480-th centered octagonal number.

It is an amenable number.

39049488583681 is a deficient number, since it is larger than the sum of its proper divisors (6248960).

39049488583681 is an frugal number, since it uses more digits than its factorization.

39049488583681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12497918 (or 6248959 counting only the distinct ones).

The product of its (nonzero) digits is 1433272320, while the sum is 76.

The spelling of 39049488583681 in words is "thirty-nine trillion, forty-nine billion, four hundred eighty-eight million, five hundred eighty-three thousand, six hundred eighty-one".