7965639473 has 8 divisors (see below), whose sum is σ = 9067605696. Its totient is φ = 6926642800.

The previous prime is 7965639469. The next prime is 7965639481. The reversal of 7965639473 is 3749365697.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7965639473 - 2² = 7965639469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7965639403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15742118 + ... + 15742623.

It is an arithmetic number, because the mean of its divisors is an integer number (1133450712).

Almost surely, 2^7965639473 is an apocalyptic number.

It is an amenable number.

7965639473 is a deficient number, since it is larger than the sum of its proper divisors (1101966223).

7965639473 is a wasteful number, since it uses less digits than its factorization.

7965639473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31484775.

The product of its digits is 25719120, while the sum is 59.

The square root of 7965639473 is about 89250.4312202468. The cubic root of 7965639473 is about 1997.1325134753.

The spelling of 7965639473 in words is "seven billion, nine hundred sixty-five million, six hundred thirty-nine thousand, four hundred seventy-three".