1420553447 has 2 divisors, whose sum is σ = 1420553448. Its totient is φ = 1420553446.

The previous prime is 1420553423. The next prime is 1420553483. The reversal of 1420553447 is 7443550241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420553447 - 2⁸ = 1420553191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420513447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710276723 + 710276724.

It is an arithmetic number, because the mean of its divisors is an integer number (710276724).

Almost surely, 2^1420553447 is an apocalyptic number.

1420553447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420553447 is an equidigital number, since it uses as much as digits as its factorization.

1420553447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 1420553447 is about 37690.2301266522. The cubic root of 1420553447 is about 1124.1368713213.

The spelling of 1420553447 in words is "one billion, four hundred twenty million, five hundred fifty-three thousand, four hundred forty-seven".