947984555493 has 6 divisors (see below), whose sum is σ = 1369311024614. Its totient is φ = 631989703656.

The previous prime is 947984555489. The next prime is 947984555521. The reversal of 947984555493 is 394555489749.

947984555493 is a `hidden beast` number, since 9 + 4 + 7 + 9 + 84 + 5 + 55 + 493 = 666.

It can be written as a sum of positive squares in only one way, i.e., 930225528324 + 17759027169 = 964482^2 + 133263^2 .

It is not a de Polignac number, because 947984555493 - 2² = 947984555489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947984655493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52665808630 + ... + 52665808647.

Almost surely, 2^947984555493 is an apocalyptic number.

It is an amenable number.

947984555493 is a deficient number, since it is larger than the sum of its proper divisors (421326469121).

947984555493 is a wasteful number, since it uses less digits than its factorization.

947984555493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105331617283 (or 105331617280 counting only the distinct ones).

The product of its digits is 979776000, while the sum is 72.

The spelling of 947984555493 in words is "nine hundred forty-seven billion, nine hundred eighty-four million, five hundred fifty-five thousand, four hundred ninety-three".