83730789 has 12 divisors (see below), whose sum is σ = 121645836. Its totient is φ = 55496832.

The previous prime is 83730767. The next prime is 83730793. The reversal of 83730789 is 98703738.

It can be written as a sum of positive squares in 2 ways, for example, as 35497764 + 48233025 = 5958^2 + 6945^2 .

It is not a de Polignac number, because 83730789 - 2⁸ = 83730533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83730709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25332 + ... + 28445.

It is an arithmetic number, because the mean of its divisors is an integer number (10137153).

Almost surely, 2^83730789 is an apocalyptic number.

It is an amenable number.

83730789 is a deficient number, since it is larger than the sum of its proper divisors (37915047).

83730789 is a wasteful number, since it uses less digits than its factorization.

83730789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53956 (or 53953 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 83730789 is about 9150.4529396091. The cubic root of 83730789 is about 437.4835502931.

It can be divided in two parts, 837 and 30789, that added together give a triangular number (31626 = T₂₅₁).

The spelling of 83730789 in words is "eighty-three million, seven hundred thirty thousand, seven hundred eighty-nine".