80938789 has 4 divisors (see below), whose sum is σ = 81061900. Its totient is φ = 80815680.

The previous prime is 80938787. The next prime is 80938859. The reversal of 80938789 is 98783908.

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 28622500 + 52316289 = 5350^2 + 7233^2 .

It is a cyclic number.

It is not a de Polignac number, because 80938789 - 2¹ = 80938787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80938787) 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, 60564 + ... + 61885.

It is an arithmetic number, because the mean of its divisors is an integer number (20265475).

Almost surely, 2^80938789 is an apocalyptic number.

It is an amenable number.

80938789 is a deficient number, since it is larger than the sum of its proper divisors (123111).

80938789 is a wasteful number, since it uses less digits than its factorization.

80938789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123110.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 80938789 is about 8996.5987461929. The cubic root of 80938789 is about 432.5658540729.

The spelling of 80938789 in words is "eighty million, nine hundred thirty-eight thousand, seven hundred eighty-nine".