1440425069 has 2 divisors, whose sum is σ = 1440425070. Its totient is φ = 1440425068.

The previous prime is 1440425057. The next prime is 1440425153. The reversal of 1440425069 is 9605240441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1039224169 + 401200900 = 32237^2 + 20030^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440425069 - 2⁴ = 1440425053 is a prime.

It is a super-2 number, since 2×1440425069² = 4149648758807309522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440425009) 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, 720212534 + 720212535.

It is an arithmetic number, because the mean of its divisors is an integer number (720212535).

Almost surely, 2^1440425069 is an apocalyptic number.

It is an amenable number.

1440425069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440425069 is an equidigital number, since it uses as much as digits as its factorization.

1440425069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1440425069 is about 37952.9322846075. The cubic root of 1440425069 is about 1129.3543362938.

The spelling of 1440425069 in words is "one billion, four hundred forty million, four hundred twenty-five thousand, sixty-nine".