80137209 has 8 divisors (see below), whose sum is σ = 109123200. Its totient is φ = 52288016.

The previous prime is 80137199. The next prime is 80137243. The reversal of 80137209 is 90273108.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80137209 - 2⁵ = 80137177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80137249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284034 + ... + 284315.

It is an arithmetic number, because the mean of its divisors is an integer number (13640400).

Almost surely, 2^80137209 is an apocalyptic number.

It is an amenable number.

80137209 is a deficient number, since it is larger than the sum of its proper divisors (28985991).

80137209 is a wasteful number, since it uses less digits than its factorization.

80137209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568399.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 80137209 is about 8951.9388402737. The cubic root of 80137209 is about 431.1331371647.

The spelling of 80137209 in words is "eighty million, one hundred thirty-seven thousand, two hundred nine".