3778769 has 2 divisors, whose sum is σ = 3778770. Its totient is φ = 3778768.

The previous prime is 3778759. The next prime is 3778771. The reversal of 3778769 is 9678773.

3778769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 1638400 = 1463^2 + 1280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3778769 is a prime.

It is a super-2 number, since 2×3778769² = 28558190310722, which contains 22 as substring.

Together with 3778771, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁵ + 7³ + 7³ + 8⁷ + 7³ + 6⁸ + 9³ .

It is not a weakly prime, because it can be changed into another prime (3778759) 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, 1889384 + 1889385.

It is an arithmetic number, because the mean of its divisors is an integer number (1889385).

Almost surely, 2^3778769 is an apocalyptic number.

It is an amenable number.

3778769 is a deficient number, since it is larger than the sum of its proper divisors (1).

3778769 is an equidigital number, since it uses as much as digits as its factorization.

3778769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 47.

The square root of 3778769 is about 1943.9056047041. The cubic root of 3778769 is about 155.7579112718.

The spelling of 3778769 in words is "three million, seven hundred seventy-eight thousand, seven hundred sixty-nine".