947983823 has 4 divisors (see below), whose sum is σ = 948219528. Its totient is φ = 947748120.

The previous prime is 947983807. The next prime is 947983831. The reversal of 947983823 is 328389749.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 947983823 - 2⁴ = 947983807 is a prime.

It is a super-3 number, since 3×947983823³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947983873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111713 + ... + 119898.

It is an arithmetic number, because the mean of its divisors is an integer number (237054882).

Almost surely, 2^947983823 is an apocalyptic number.

947983823 is a deficient number, since it is larger than the sum of its proper divisors (235705).

947983823 is a wasteful number, since it uses less digits than its factorization.

947983823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235704.

The product of its digits is 2612736, while the sum is 53.

The square root of 947983823 is about 30789.3459332932. The cubic root of 947983823 is about 982.3516420751.

The spelling of 947983823 in words is "nine hundred forty-seven million, nine hundred eighty-three thousand, eight hundred twenty-three".