20097869 has 8 divisors (see below), whose sum is σ = 22190112. Its totient is φ = 18049840.

The previous prime is 20097823. The next prime is 20097901. The reversal of 20097869 is 96879002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20097869 is a prime.

It is a super-2 number, since 2×20097869² = 807848676682322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20097809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10094 + ... + 11919.

It is an arithmetic number, because the mean of its divisors is an integer number (2773764).

Almost surely, 2^20097869 is an apocalyptic number.

It is an amenable number.

20097869 is a deficient number, since it is larger than the sum of its proper divisors (2092243).

20097869 is a wasteful number, since it uses less digits than its factorization.

20097869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22107.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 20097869 is about 4483.0646883577. The cubic root of 20097869 is about 271.8838036344.

The spelling of 20097869 in words is "twenty million, ninety-seven thousand, eight hundred sixty-nine".