20170469 has 4 divisors (see below), whose sum is σ = 22004160. Its totient is φ = 18336780.

The previous prime is 20170433. The next prime is 20170477. The reversal of 20170469 is 96407102.

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 not a de Polignac number, because 20170469 - 2¹² = 20166373 is a prime.

It is a super-2 number, since 2×20170469² = 813695639359922, 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 (20170489) 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, 916829 + ... + 916850.

It is an arithmetic number, because the mean of its divisors is an integer number (5501040).

Almost surely, 2^20170469 is an apocalyptic number.

It is an amenable number.

20170469 is a deficient number, since it is larger than the sum of its proper divisors (1833691).

20170469 is a wasteful number, since it uses less digits than its factorization.

20170469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833690.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20170469 is about 4491.1545286262. The cubic root of 20170469 is about 272.2107876234.

The spelling of 20170469 in words is "twenty million, one hundred seventy thousand, four hundred sixty-nine".