3780869 has 2 divisors, whose sum is σ = 3780870. Its totient is φ = 3780868.

The previous prime is 3780863. The next prime is 3780871. The reversal of 3780869 is 9680873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3751969 + 28900 = 1937^2 + 170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3780869 is a prime.

It is a super-2 number, since 2×3780869² = 28589940790322, which contains 22 as substring.

Together with 3780871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3780863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890434 + 1890435.

It is an arithmetic number, because the mean of its divisors is an integer number (1890435).

Almost surely, 2^3780869 is an apocalyptic number.

It is an amenable number.

3780869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3780869 is an equidigital number, since it uses as much as digits as its factorization.

3780869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 3780869 is about 1944.4456793647. The cubic root of 3780869 is about 155.7867593826.

The spelling of 3780869 in words is "three million, seven hundred eighty thousand, eight hundred sixty-nine".