3780989 has 2 divisors, whose sum is σ = 3780990. Its totient is φ = 3780988.

The previous prime is 3780971. The next prime is 3781007. The reversal of 3780989 is 9890873.

It is a balanced prime because it is at equal distance from previous prime (3780971) and next prime (3781007).

It can be written as a sum of positive squares in only one way, i.e., 3496900 + 284089 = 1870^2 + 533^2 .

It is an emirp because it is prime and its reverse (9890873) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3780989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3780929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890494 + 1890495.

It is an arithmetic number, because the mean of its divisors is an integer number (1890495).

Almost surely, 2^3780989 is an apocalyptic number.

It is an amenable number.

3780989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3780989 is an equidigital number, since it uses as much as digits as its factorization.

3780989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 3780989 is about 1944.4765362431. The cubic root of 3780989 is about 155.7884075234.

The spelling of 3780989 in words is "three million, seven hundred eighty thousand, nine hundred eighty-nine".