1065440447 has 16 divisors (see below), whose sum is σ = 1139635200. Its totient is φ = 993189600.

The previous prime is 1065440437. The next prime is 1065440459. The reversal of 1065440447 is 7440445601.

It is a cyclic number.

It is not a de Polignac number, because 1065440447 - 2⁸ = 1065440191 is a prime.

It is a super-2 number, since 2×1065440447² = 2270326692207119618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065440437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311018 + ... + 314424.

It is an arithmetic number, because the mean of its divisors is an integer number (71227200).

Almost surely, 2^1065440447 is an apocalyptic number.

1065440447 is a deficient number, since it is larger than the sum of its proper divisors (74194753).

1065440447 is a wasteful number, since it uses less digits than its factorization.

1065440447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 1065440447 is about 32641.0852607569. The cubic root of 1065440447 is about 1021.3542331914.

The spelling of 1065440447 in words is "one billion, sixty-five million, four hundred forty thousand, four hundred forty-seven".