3777989 has 2 divisors, whose sum is σ = 3777990. Its totient is φ = 3777988.

The previous prime is 3777973. The next prime is 3777997. The reversal of 3777989 is 9897773.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2455489 + 1322500 = 1567^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 3777989 - 2⁴ = 3777973 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 (3777089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1888994 + 1888995.

It is an arithmetic number, because the mean of its divisors is an integer number (1888995).

Almost surely, 2^3777989 is an apocalyptic number.

It is an amenable number.

3777989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3777989 is an equidigital number, since it uses as much as digits as its factorization.

3777989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792, while the sum is 50.

The square root of 3777989 is about 1943.7049673240. The cubic root of 3777989 is about 155.7471935371.

The spelling of 3777989 in words is "three million, seven hundred seventy-seven thousand, nine hundred eighty-nine".