83361789 has 36 divisors (see below), whose sum is σ = 140715900. Its totient is φ = 47416320.

The previous prime is 83361781. The next prime is 83361793. The reversal of 83361789 is 98716338.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17994564 + 65367225 = 4242^2 + 8085^2 .

It is not a de Polignac number, because 83361789 - 2³ = 83361781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83361781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 185437 + ... + 185885.

It is an arithmetic number, because the mean of its divisors is an integer number (3908775).

Almost surely, 2^83361789 is an apocalyptic number.

It is an amenable number.

83361789 is a deficient number, since it is larger than the sum of its proper divisors (57354111).

83361789 is a wasteful number, since it uses less digits than its factorization.

83361789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 880 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 83361789 is about 9130.2677397763. The cubic root of 83361789 is about 436.8399433394.

The spelling of 83361789 in words is "eighty-three million, three hundred sixty-one thousand, seven hundred eighty-nine".