3909761 has 2 divisors, whose sum is σ = 3909762. Its totient is φ = 3909760.

The previous prime is 3909749. The next prime is 3909767. The reversal of 3909761 is 1679093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3783025 + 126736 = 1945^2 + 356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3909761 is a prime.

It is not a weakly prime, because it can be changed into another prime (3909767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954880 + 1954881.

It is an arithmetic number, because the mean of its divisors is an integer number (1954881).

Almost surely, 2^3909761 is an apocalyptic number.

It is an amenable number.

3909761 is a deficient number, since it is larger than the sum of its proper divisors (1).

3909761 is an equidigital number, since it uses as much as digits as its factorization.

3909761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 3909761 is about 1977.3115586574. The cubic root of 3909761 is about 157.5373019903.

The spelling of 3909761 in words is "three million, nine hundred nine thousand, seven hundred sixty-one".