83998851 has 4 divisors (see below), whose sum is σ = 111998472. Its totient is φ = 55999232.

The previous prime is 83998787. The next prime is 83998861. The reversal of 83998851 is 15889938.

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

It is a cyclic number.

It is not a de Polignac number, because 83998851 - 2⁶ = 83998787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83998794 and 83998803.

It is not an unprimeable number, because it can be changed into a prime (83998861) 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, 13999806 + ... + 13999811.

It is an arithmetic number, because the mean of its divisors is an integer number (27999618).

Almost surely, 2^83998851 is an apocalyptic number.

83998851 is a deficient number, since it is larger than the sum of its proper divisors (27999621).

83998851 is a wasteful number, since it uses less digits than its factorization.

83998851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27999620.

The product of its digits is 622080, while the sum is 51.

The square root of 83998851 is about 9165.0887066084. The cubic root of 83998851 is about 437.9499171275.

The spelling of 83998851 in words is "eighty-three million, nine hundred ninety-eight thousand, eight hundred fifty-one".