20469169 has 4 divisors (see below), whose sum is σ = 23393344. Its totient is φ = 17544996.

The previous prime is 20469167. The next prime is 20469179. The reversal of 20469169 is 96196402.

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 20469169 - 2¹ = 20469167 is a prime.

It is a super-2 number, since 2×20469169² = 837973759101122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20469167) 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, 1462077 + ... + 1462090.

It is an arithmetic number, because the mean of its divisors is an integer number (5848336).

Almost surely, 2^20469169 is an apocalyptic number.

It is an amenable number.

20469169 is a deficient number, since it is larger than the sum of its proper divisors (2924175).

20469169 is an equidigital number, since it uses as much as digits as its factorization.

20469169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924174.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 20469169 is about 4524.2865735937. The cubic root of 20469169 is about 273.5479118449.

The spelling of 20469169 in words is "twenty million, four hundred sixty-nine thousand, one hundred sixty-nine".