4090069 has 2 divisors, whose sum is σ = 4090070. Its totient is φ = 4090068.

The previous prime is 4090061. The next prime is 4090103. The reversal of 4090069 is 9600904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 1855044 = 1495^2 + 1362^2 .

It is a cyclic number.

It is not a de Polignac number, because 4090069 - 2³ = 4090061 is a prime.

It is a super-2 number, since 2×4090069² = 33457328849522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4090061) 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, 2045034 + 2045035.

It is an arithmetic number, because the mean of its divisors is an integer number (2045035).

Almost surely, 2^4090069 is an apocalyptic number.

It is an amenable number.

4090069 is a deficient number, since it is larger than the sum of its proper divisors (1).

4090069 is an equidigital number, since it uses as much as digits as its factorization.

4090069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 4090069 is about 2022.3919006958. The cubic root of 4090069 is about 159.9227361328.

It can be divided in two parts, 40 and 90069, that added together give a palindrome (90109).

The spelling of 4090069 in words is "four million, ninety thousand, sixty-nine".