80102409 has 4 divisors (see below), whose sum is σ = 106803216. Its totient is φ = 53401604.

The previous prime is 80102381. The next prime is 80102431. The reversal of 80102409 is 90420108.

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 80102409 - 2⁵ = 80102377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80102459) 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, 13350399 + ... + 13350404.

It is an arithmetic number, because the mean of its divisors is an integer number (26700804).

Almost surely, 2^80102409 is an apocalyptic number.

It is an amenable number.

80102409 is a deficient number, since it is larger than the sum of its proper divisors (26700807).

80102409 is a wasteful number, since it uses less digits than its factorization.

80102409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26700806.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 80102409 is about 8949.9949161997. The cubic root of 80102409 is about 431.0707208596.

The spelling of 80102409 in words is "eighty million, one hundred two thousand, four hundred nine".