947284129 has 4 divisors (see below), whose sum is σ = 1033400880. Its totient is φ = 861167380.

The previous prime is 947284111. The next prime is 947284139. The reversal of 947284129 is 921482749.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 947284129 - 2⁵ = 947284097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (947284139) 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, 43058359 + ... + 43058380.

It is an arithmetic number, because the mean of its divisors is an integer number (258350220).

Almost surely, 2^947284129 is an apocalyptic number.

It is an amenable number.

947284129 is a deficient number, since it is larger than the sum of its proper divisors (86116751).

947284129 is a wasteful number, since it uses less digits than its factorization.

947284129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86116750.

The product of its digits is 290304, while the sum is 46.

The square root of 947284129 is about 30777.9812365919. The cubic root of 947284129 is about 982.1098957818.

The spelling of 947284129 in words is "nine hundred forty-seven million, two hundred eighty-four thousand, one hundred twenty-nine".