83938961 has 4 divisors (see below), whose sum is σ = 84378624. Its totient is φ = 83499300.

The previous prime is 83938927. The next prime is 83938973. The reversal of 83938961 is 16983938.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16983938 = 2 ⋅8491969.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83938961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83938861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219545 + ... + 219926.

It is an arithmetic number, because the mean of its divisors is an integer number (21094656).

Almost surely, 2^83938961 is an apocalyptic number.

It is an amenable number.

83938961 is a deficient number, since it is larger than the sum of its proper divisors (439663).

83938961 is a wasteful number, since it uses less digits than its factorization.

83938961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439662.

The product of its digits is 279936, while the sum is 47.

The square root of 83938961 is about 9161.8208343102. The cubic root of 83938961 is about 437.8458083360.

The spelling of 83938961 in words is "eighty-three million, nine hundred thirty-eight thousand, nine hundred sixty-one".