80195289 has 4 divisors (see below), whose sum is σ = 106927056. Its totient is φ = 53463524.

The previous prime is 80195287. The next prime is 80195299. The reversal of 80195289 is 98259108.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80195289 - 2¹ = 80195287 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80195289.

It is not an unprimeable number, because it can be changed into a prime (80195287) 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, 13365879 + ... + 13365884.

It is an arithmetic number, because the mean of its divisors is an integer number (26731764).

Almost surely, 2^80195289 is an apocalyptic number.

It is an amenable number.

80195289 is a deficient number, since it is larger than the sum of its proper divisors (26731767).

80195289 is a wasteful number, since it uses less digits than its factorization.

80195289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26731766.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 80195289 is about 8955.1822427017. The cubic root of 80195289 is about 431.2372675930.

The spelling of 80195289 in words is "eighty million, one hundred ninety-five thousand, two hundred eighty-nine".