3780769 has 4 divisors (see below), whose sum is σ = 3819844. Its totient is φ = 3741696.

The previous prime is 3780757. The next prime is 3780781. The reversal of 3780769 is 9670873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9670873 = 173 ⋅55901.

It is an interprime number because it is at equal distance from previous prime (3780757) and next prime (3780781).

It can be written as a sum of positive squares in 2 ways, for example, as 846400 + 2934369 = 920^2 + 1713^2 .

It is a cyclic number.

It is not a de Polignac number, because 3780769 - 2⁵ = 3780737 is a prime.

It is a super-2 number, since 2×3780769² = 28588428462722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3780709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19392 + ... + 19585.

It is an arithmetic number, because the mean of its divisors is an integer number (954961).

Almost surely, 2^3780769 is an apocalyptic number.

It is an amenable number.

3780769 is a deficient number, since it is larger than the sum of its proper divisors (39075).

3780769 is an equidigital number, since it uses as much as digits as its factorization.

3780769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39074.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 3780769 is about 1944.4199649253. The cubic root of 3780769 is about 155.7853859053.

The spelling of 3780769 in words is "three million, seven hundred eighty thousand, seven hundred sixty-nine".