1491449 has 2 divisors, whose sum is σ = 1491450. Its totient is φ = 1491448.

The previous prime is 1491439. The next prime is 1491491. The reversal of 1491449 is 9441941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1092025 + 399424 = 1045^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1491449 - 2¹⁶ = 1425913 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 (1491419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745724 + 745725.

It is an arithmetic number, because the mean of its divisors is an integer number (745725).

2^1491449 is an apocalyptic number.

It is an amenable number.

1491449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491449 is an equidigital number, since it uses as much as digits as its factorization.

1491449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 1491449 is about 1221.2489508696. The cubic root of 1491449 is about 114.2534884586.

The spelling of 1491449 in words is "one million, four hundred ninety-one thousand, four hundred forty-nine".