3778789 has 8 divisors (see below), whose sum is σ = 4348800. Its totient is φ = 3216336.

The previous prime is 3778771. The next prime is 3778793. The reversal of 3778789 is 9878773.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3778789 - 2⁷ = 3778661 is a prime.

It is a Duffinian number.

3778789 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769 + ... + 2854.

It is an arithmetic number, because the mean of its divisors is an integer number (543600).

Almost surely, 2^3778789 is an apocalyptic number.

It is an amenable number.

3778789 is a deficient number, since it is larger than the sum of its proper divisors (570011).

3778789 is a wasteful number, since it uses less digits than its factorization.

3778789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779.

The product of its digits is 592704, while the sum is 49.

The square root of 3778789 is about 1943.9107489800. The cubic root of 3778789 is about 155.7581860662.

The spelling of 3778789 in words is "three million, seven hundred seventy-eight thousand, seven hundred eighty-nine".