7834439065 has 16 divisors (see below), whose sum is σ = 9584776656. Its totient is φ = 6145401600.

The previous prime is 7834439057. The next prime is 7834439111. The reversal of 7834439065 is 5609344387.

It can be written as a sum of positive squares in 8 ways, for example, as 595984 + 7833843081 = 772^2 + 88509^2 .

It is not a de Polignac number, because 7834439065 - 2³ = 7834439057 is a prime.

It is a super-2 number, since 2×7834439065² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 452875 + ... + 469855.

It is an arithmetic number, because the mean of its divisors is an integer number (599048541).

Almost surely, 2^7834439065 is an apocalyptic number.

It is an amenable number.

7834439065 is a deficient number, since it is larger than the sum of its proper divisors (1750337591).

7834439065 is a wasteful number, since it uses less digits than its factorization.

7834439065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18780.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The square root of 7834439065 is about 88512.3667348241. The cubic root of 7834439065 is about 1986.1069707509.

The spelling of 7834439065 in words is "seven billion, eight hundred thirty-four million, four hundred thirty-nine thousand, sixty-five".