893430449 has 2 divisors, whose sum is σ = 893430450. Its totient is φ = 893430448.

The previous prime is 893430413. The next prime is 893430457. The reversal of 893430449 is 944034398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617870449 + 275560000 = 24857^2 + 16600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-893430449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (893433449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 446715224 + 446715225.

It is an arithmetic number, because the mean of its divisors is an integer number (446715225).

Almost surely, 2^893430449 is an apocalyptic number.

It is an amenable number.

893430449 is a deficient number, since it is larger than the sum of its proper divisors (1).

893430449 is an equidigital number, since it uses as much as digits as its factorization.

893430449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 893430449 is about 29890.3069405451. The cubic root of 893430449 is about 963.1344483785.

The spelling of 893430449 in words is "eight hundred ninety-three million, four hundred thirty thousand, four hundred forty-nine".