3494509 has 2 divisors, whose sum is σ = 3494510. Its totient is φ = 3494508.

The previous prime is 3494501. The next prime is 3494521. The reversal of 3494509 is 9054943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3222025 + 272484 = 1795^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 3494509 - 2³ = 3494501 is a prime.

It is an alternating number because its digits alternate between odd and even.

3494509 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3494501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1747254 + 1747255.

It is an arithmetic number, because the mean of its divisors is an integer number (1747255).

Almost surely, 2^3494509 is an apocalyptic number.

It is an amenable number.

3494509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3494509 is an equidigital number, since it uses as much as digits as its factorization.

3494509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3494509 is about 1869.3605858689. The cubic root of 3494509 is about 151.7500074637.

The spelling of 3494509 in words is "three million, four hundred ninety-four thousand, five hundred nine".