83938257841 has 3 divisors (see below), whose sum is σ = 83938547563. Its totient is φ = 83937968120.

The previous prime is 83938257811. The next prime is 83938257863. The reversal of 83938257841 is 14875283938.

It is a happy number.

The square root of 83938257841 is 289721.

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 can be written as a sum of positive squares in only one way, i.e., 63040664241 + 20897593600 = 251079^2 + 144560^2 .

It is a de Polignac number, because none of the positive numbers 2^k-83938257841 is a prime.

It is a super-2 number, since 2×83938257841² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83938257811) 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, 144861 + ... + 434581.

Almost surely, 2^83938257841 is an apocalyptic number.

83938257841 is the 289721-st square number.

83938257841 is the 144861-st centered octagonal number.

It is an amenable number.

83938257841 is a deficient number, since it is larger than the sum of its proper divisors (289722).

83938257841 is an frugal number, since it uses more digits than its factorization.

83938257841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579442 (or 289721 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 58.

The spelling of 83938257841 in words is "eighty-three billion, nine hundred thirty-eight million, two hundred fifty-seven thousand, eight hundred forty-one".