39423169 has 2 divisors, whose sum is σ = 39423170. Its totient is φ = 39423168.

The previous prime is 39423143. The next prime is 39423179. The reversal of 39423169 is 96132493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37051569 + 2371600 = 6087^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 39423169 - 2⁹ = 39422657 is a prime.

It is a super-2 number, since 2×39423169² = 3108372508005122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39423179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19711584 + 19711585.

It is an arithmetic number, because the mean of its divisors is an integer number (19711585).

Almost surely, 2^39423169 is an apocalyptic number.

It is an amenable number.

39423169 is a deficient number, since it is larger than the sum of its proper divisors (1).

39423169 is an equidigital number, since it uses as much as digits as its factorization.

39423169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 39423169 is about 6278.7872236603. The cubic root of 39423169 is about 340.3432778635.

The spelling of 39423169 in words is "thirty-nine million, four hundred twenty-three thousand, one hundred sixty-nine".