396731986541 has 16 divisors (see below), whose sum is σ = 447749467200. Its totient is φ = 348207820800.

The previous prime is 396731986529. The next prime is 396731986591. The reversal of 396731986541 is 145689137693.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396731986541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396731986591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8004845 + ... + 8054253.

It is an arithmetic number, because the mean of its divisors is an integer number (27984341700).

Almost surely, 2^396731986541 is an apocalyptic number.

It is an amenable number.

396731986541 is a deficient number, since it is larger than the sum of its proper divisors (51017480659).

396731986541 is a wasteful number, since it uses less digits than its factorization.

396731986541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74620.

The product of its digits is 29393280, while the sum is 62.

The spelling of 396731986541 in words is "three hundred ninety-six billion, seven hundred thirty-one million, nine hundred eighty-six thousand, five hundred forty-one".