4009769 has 2 divisors, whose sum is σ = 4009770. Its totient is φ = 4009768.

The previous prime is 4009729. The next prime is 4009777. The reversal of 4009769 is 9679004.

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., 3655744 + 354025 = 1912^2 + 595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4009769 is a prime.

It is a super-2 number, since 2×4009769² = 32156494866722, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4009729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004884 + 2004885.

It is an arithmetic number, because the mean of its divisors is an integer number (2004885).

Almost surely, 2^4009769 is an apocalyptic number.

It is an amenable number.

4009769 is a deficient number, since it is larger than the sum of its proper divisors (1).

4009769 is an equidigital number, since it uses as much as digits as its factorization.

4009769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 4009769 is about 2002.4407606718. The cubic root of 4009769 is about 158.8692278112.

The spelling of 4009769 in words is "four million, nine thousand, seven hundred sixty-nine".