83738881 has 4 divisors (see below), whose sum is σ = 86002132. Its totient is φ = 81475632.

The previous prime is 83738869. The next prime is 83738899. The reversal of 83738881 is 18883738.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41280625 + 42458256 = 6425^2 + 6516^2 .

It is a cyclic number.

It is not a de Polignac number, because 83738881 - 2⁵ = 83738849 is a prime.

It is a super-2 number, since 2×83738881² = 14024400382264322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83738381) 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, 1131570 + ... + 1131643.

It is an arithmetic number, because the mean of its divisors is an integer number (21500533).

Almost surely, 2^83738881 is an apocalyptic number.

It is an amenable number.

83738881 is a deficient number, since it is larger than the sum of its proper divisors (2263251).

83738881 is a wasteful number, since it uses less digits than its factorization.

83738881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263250.

The product of its digits is 258048, while the sum is 46.

The square root of 83738881 is about 9150.8950928311. The cubic root of 83738881 is about 437.4976430893.

The spelling of 83738881 in words is "eighty-three million, seven hundred thirty-eight thousand, eight hundred eighty-one".