3751409 has 2 divisors, whose sum is σ = 3751410. Its totient is φ = 3751408.

The previous prime is 3751387. The next prime is 3751421. The reversal of 3751409 is 9041573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3717184 + 34225 = 1928^2 + 185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3751409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3751009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1875704 + 1875705.

It is an arithmetic number, because the mean of its divisors is an integer number (1875705).

Almost surely, 2^3751409 is an apocalyptic number.

It is an amenable number.

3751409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3751409 is an equidigital number, since it uses as much as digits as its factorization.

3751409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 3751409 is about 1936.8554411726. The cubic root of 3751409 is about 155.3810810416.

The spelling of 3751409 in words is "three million, seven hundred fifty-one thousand, four hundred nine".