39450471083521 has 9 divisors (see below), whose sum is σ = 39532223239041. Its totient is φ = 39368887681092.

The previous prime is 39450471083453. The next prime is 39450471083579. The reversal of 39450471083521 is 12538017405493.

The square root of 39450471083521 is 6280961.

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

It is a de Polignac number, because none of the positive numbers 2^k-39450471083521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39450471083321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3159317140 + ... + 3159329626.

Almost surely, 2^{39450471083521} is an apocalyptic number.

39450471083521 is the 6280961-st square number.

39450471083521 is the 3140481-st centered octagonal number.

It is an amenable number.

39450471083521 is a deficient number, since it is larger than the sum of its proper divisors (81752155520).

39450471083521 is an frugal number, since it uses more digits than its factorization.

39450471083521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25980 (or 12990 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 39450471083521 in words is "thirty-nine trillion, four hundred fifty billion, four hundred seventy-one million, eighty-three thousand, five hundred twenty-one".