3977387 has 2 divisors, whose sum is σ = 3977388. Its totient is φ = 3977386.

The previous prime is 3977381. The next prime is 3977401. The reversal of 3977387 is 7837793.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3977387 is a prime.

It is not a weakly prime, because it can be changed into another prime (3977381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1988693 + 1988694.

It is an arithmetic number, because the mean of its divisors is an integer number (1988694).

Almost surely, 2^3977387 is an apocalyptic number.

3977387 is a deficient number, since it is larger than the sum of its proper divisors (1).

3977387 is an equidigital number, since it uses as much as digits as its factorization.

3977387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 44.

The square root of 3977387 is about 1994.3387375268. The cubic root of 3977387 is about 158.4404072296.

The spelling of 3977387 in words is "three million, nine hundred seventy-seven thousand, three hundred eighty-seven".