947908643236 has 27 divisors (see below), whose sum is σ = 1698464986113. Its totient is φ = 462891236640.

The previous prime is 947908643207. The next prime is 947908643243. The reversal of 947908643236 is 632346809749.

The square root of 947908643236 is 973606.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 72411580836 + 875497062400 = 269094^2 + 935680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 83724456 + ... + 83735776.

Almost surely, 2^947908643236 is an apocalyptic number.

947908643236 is the 973606-th square number.

It is an amenable number.

947908643236 is a deficient number, since it is larger than the sum of its proper divisors (750556342877).

947908643236 is an frugal number, since it uses more digits than its factorization.

947908643236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22732 (or 11366 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 61.

The spelling of 947908643236 in words is "nine hundred forty-seven billion, nine hundred eight million, six hundred forty-three thousand, two hundred thirty-six".