20062409 has 4 divisors (see below), whose sum is σ = 20095440. Its totient is φ = 20029380.

The previous prime is 20062379. The next prime is 20062411. The reversal of 20062409 is 90426002.

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 20062409 - 2²⁰ = 19013833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20062439) 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, 15587 + ... + 16824.

It is an arithmetic number, because the mean of its divisors is an integer number (5023860).

Almost surely, 2^20062409 is an apocalyptic number.

It is an amenable number.

20062409 is a deficient number, since it is larger than the sum of its proper divisors (33031).

20062409 is an equidigital number, since it uses as much as digits as its factorization.

20062409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33030.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20062409 is about 4479.1080585313. The cubic root of 20062409 is about 271.7238086398.

The spelling of 20062409 in words is "twenty million, sixty-two thousand, four hundred nine".