169000399 has 2 divisors, whose sum is σ = 169000400. Its totient is φ = 169000398.

The previous prime is 169000393. The next prime is 169000463. The reversal of 169000399 is 993000961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 169000399 - 2¹³ = 168992207 is a prime.

It is a super-2 number, since 2×169000399² = 57122269724318402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169000393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84500199 + 84500200.

It is an arithmetic number, because the mean of its divisors is an integer number (84500200).

Almost surely, 2^169000399 is an apocalyptic number.

169000399 is a deficient number, since it is larger than the sum of its proper divisors (1).

169000399 is an equidigital number, since it uses as much as digits as its factorization.

169000399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 169000399 is about 13000.0153461448. The cubic root of 169000399 is about 552.8779164723.

The spelling of 169000399 in words is "one hundred sixty-nine million, three hundred ninety-nine", and thus it is an aban number.