3694409 has 2 divisors, whose sum is σ = 3694410. Its totient is φ = 3694408.

The previous prime is 3694393. The next prime is 3694429. The reversal of 3694409 is 9044963.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3367225 + 327184 = 1835^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 3694409 - 2⁴ = 3694393 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3694429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1847204 + 1847205.

It is an arithmetic number, because the mean of its divisors is an integer number (1847205).

Almost surely, 2^3694409 is an apocalyptic number.

It is an amenable number.

3694409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3694409 is an equidigital number, since it uses as much as digits as its factorization.

3694409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 3694409 is about 1922.0845454870. The cubic root of 3694409 is about 154.5900927888.

The spelling of 3694409 in words is "three million, six hundred ninety-four thousand, four hundred nine".