3957761 has 2 divisors, whose sum is σ = 3957762. Its totient is φ = 3957760.

The previous prime is 3957749. The next prime is 3957769. The reversal of 3957761 is 1677593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3083536 + 874225 = 1756^2 + 935^2 .

It is an emirp because it is prime and its reverse (1677593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3957761 - 2¹⁰ = 3956737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3957769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978880 + 1978881.

It is an arithmetic number, because the mean of its divisors is an integer number (1978881).

Almost surely, 2^3957761 is an apocalyptic number.

It is an amenable number.

3957761 is a deficient number, since it is larger than the sum of its proper divisors (1).

3957761 is an equidigital number, since it uses as much as digits as its factorization.

3957761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 38.

The square root of 3957761 is about 1989.4122247538. The cubic root of 3957761 is about 158.1793748747.

The spelling of 3957761 in words is "three million, nine hundred fifty-seven thousand, seven hundred sixty-one".