7439864865 has 16 divisors (see below), whose sum is σ = 12530299200. Its totient is φ = 3759089472.

The previous prime is 7439864807. The next prime is 7439864881. The reversal of 7439864865 is 5684689347.

It is not a de Polignac number, because 7439864865 - 2⁶ = 7439864801 is a prime.

It is a super-2 number, since 2×7439864865² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7439864799 and 7439864808.

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, 13052110 + ... + 13052679.

It is an arithmetic number, because the mean of its divisors is an integer number (783143700).

Almost surely, 2^7439864865 is an apocalyptic number.

It is an amenable number.

7439864865 is a deficient number, since it is larger than the sum of its proper divisors (5090434335).

7439864865 is a wasteful number, since it uses less digits than its factorization.

7439864865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26104816.

The product of its digits is 34836480, while the sum is 60.

The square root of 7439864865 is about 86254.6512658883. The cubic root of 7439864865 is about 1952.1881957964.

The spelling of 7439864865 in words is "seven billion, four hundred thirty-nine million, eight hundred sixty-four thousand, eight hundred sixty-five".