169474969 has 2 divisors, whose sum is σ = 169474970. Its totient is φ = 169474968.

The previous prime is 169474937. The next prime is 169474993. The reversal of 169474969 is 969474961.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130873600 + 38601369 = 11440^2 + 6213^2 .

It is a cyclic number.

It is not a de Polignac number, because 169474969 - 2⁵ = 169474937 is a prime.

It is a super-2 number, since 2×169474969² = 57443530235101922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (169474919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84737484 + 84737485.

It is an arithmetic number, because the mean of its divisors is an integer number (84737485).

Almost surely, 2^169474969 is an apocalyptic number.

It is an amenable number.

169474969 is a deficient number, since it is larger than the sum of its proper divisors (1).

169474969 is an equidigital number, since it uses as much as digits as its factorization.

169474969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 169474969 is about 13018.2552210348. The cubic root of 169474969 is about 553.3949449548.

The spelling of 169474969 in words is "one hundred sixty-nine million, four hundred seventy-four thousand, nine hundred sixty-nine".