1448399591 has 2 divisors, whose sum is σ = 1448399592. Its totient is φ = 1448399590.

The previous prime is 1448399549. The next prime is 1448399627. The reversal of 1448399591 is 1959938441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1448399591 - 2²⁶ = 1381290727 is a prime.

It is a super-2 number, since 2×1448399591² = 4195722750417934562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1448599591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724199795 + 724199796.

It is an arithmetic number, because the mean of its divisors is an integer number (724199796).

Almost surely, 2^1448399591 is an apocalyptic number.

1448399591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1448399591 is an equidigital number, since it uses as much as digits as its factorization.

1448399591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 53.

The square root of 1448399591 is about 38057.8453278690. The cubic root of 1448399591 is about 1131.4346231604.

The spelling of 1448399591 in words is "one billion, four hundred forty-eight million, three hundred ninety-nine thousand, five hundred ninety-one".