83789931 has 16 divisors (see below), whose sum is σ = 115734528. Its totient is φ = 53865600.

The previous prime is 83789899. The next prime is 83789933. The reversal of 83789931 is 13998738.

It is not a de Polignac number, because 83789931 - 2⁵ = 83789899 is a prime.

It is a super-2 number, since 2×83789931² = 14041505073969522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83789933) 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, 27475 + ... + 30371.

It is an arithmetic number, because the mean of its divisors is an integer number (7233408).

Almost surely, 2^83789931 is an apocalyptic number.

83789931 is a deficient number, since it is larger than the sum of its proper divisors (31944597).

83789931 is a wasteful number, since it uses less digits than its factorization.

83789931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242.

The product of its digits is 326592, while the sum is 48.

The square root of 83789931 is about 9153.6840124619. The cubic root of 83789931 is about 437.5865293884.

The spelling of 83789931 in words is "eighty-three million, seven hundred eighty-nine thousand, nine hundred thirty-one".