20932169 has 2 divisors, whose sum is σ = 20932170. Its totient is φ = 20932168.

The previous prime is 20932159. The next prime is 20932183. The reversal of 20932169 is 96123902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12866569 + 8065600 = 3587^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 20932169 - 2¹² = 20928073 is a prime.

It is a super-2 number, since 2×20932169² = 876311398089122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20932159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10466084 + 10466085.

It is an arithmetic number, because the mean of its divisors is an integer number (10466085).

Almost surely, 2^20932169 is an apocalyptic number.

It is an amenable number.

20932169 is a deficient number, since it is larger than the sum of its proper divisors (1).

20932169 is an equidigital number, since it uses as much as digits as its factorization.

20932169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 20932169 is about 4575.1687400576. The cubic root of 20932169 is about 275.5950486871.

The spelling of 20932169 in words is "twenty million, nine hundred thirty-two thousand, one hundred sixty-nine".