39140669 has 2 divisors, whose sum is σ = 39140670. Its totient is φ = 39140668.

The previous prime is 39140653. The next prime is 39140743. The reversal of 39140669 is 96604193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34987225 + 4153444 = 5915^2 + 2038^2 .

It is a cyclic number.

It is not a de Polignac number, because 39140669 - 2⁴ = 39140653 is a prime.

It is a super-2 number, since 2×39140669² = 3063983939535122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39140639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19570334 + 19570335.

It is an arithmetic number, because the mean of its divisors is an integer number (19570335).

Almost surely, 2^39140669 is an apocalyptic number.

It is an amenable number.

39140669 is a deficient number, since it is larger than the sum of its proper divisors (1).

39140669 is an equidigital number, since it uses as much as digits as its factorization.

39140669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 39140669 is about 6256.2503946054. The cubic root of 39140669 is about 339.5283801358.

The spelling of 39140669 in words is "thirty-nine million, one hundred forty thousand, six hundred sixty-nine".