1494509 has 2 divisors, whose sum is σ = 1494510. Its totient is φ = 1494508.

The previous prime is 1494481. The next prime is 1494511. The reversal of 1494509 is 9054941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1493284 + 1225 = 1222^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 1494509 - 2⁸ = 1494253 is a prime.

Together with 1494511, it forms a pair of twin primes.

It is a Chen prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1494539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747254 + 747255.

It is an arithmetic number, because the mean of its divisors is an integer number (747255).

2^1494509 is an apocalyptic number.

It is an amenable number.

1494509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1494509 is an equidigital number, since it uses as much as digits as its factorization.

1494509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1494509 is about 1222.5011247439. The cubic root of 1494509 is about 114.3315728908.

The spelling of 1494509 in words is "one million, four hundred ninety-four thousand, five hundred nine".