1451421449 has 2 divisors, whose sum is σ = 1451421450. Its totient is φ = 1451421448.

The previous prime is 1451421421. The next prime is 1451421451. The reversal of 1451421449 is 9441241541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1341024400 + 110397049 = 36620^2 + 10507^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451421449 - 2⁸ = 1451421193 is a prime.

Together with 1451421451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1451421479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725710724 + 725710725.

It is an arithmetic number, because the mean of its divisors is an integer number (725710725).

Almost surely, 2^1451421449 is an apocalyptic number.

It is an amenable number.

1451421449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451421449 is an equidigital number, since it uses as much as digits as its factorization.

1451421449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 1451421449 is about 38097.5254970713. The cubic root of 1451421449 is about 1132.2209300565.

The spelling of 1451421449 in words is "one billion, four hundred fifty-one million, four hundred twenty-one thousand, four hundred forty-nine".