1254422989 has 2 divisors, whose sum is σ = 1254422990. Its totient is φ = 1254422988.

The previous prime is 1254422969. The next prime is 1254422999. The reversal of 1254422989 is 9892244521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1013148900 + 241274089 = 31830^2 + 15533^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254422989 - 2⁷ = 1254422861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254422969) 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, 627211494 + 627211495.

It is an arithmetic number, because the mean of its divisors is an integer number (627211495).

Almost surely, 2^1254422989 is an apocalyptic number.

It is an amenable number.

1254422989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254422989 is an equidigital number, since it uses as much as digits as its factorization.

1254422989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 46.

The square root of 1254422989 is about 35417.8343352611. The cubic root of 1254422989 is about 1078.4863881918.

The spelling of 1254422989 in words is "one billion, two hundred fifty-four million, four hundred twenty-two thousand, nine hundred eighty-nine".