947998879 has 8 divisors (see below), whose sum is σ = 993187328. Its totient is φ = 903723480.

The previous prime is 947998871. The next prime is 947998907. The reversal of 947998879 is 978899749.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 947998879 - 2³ = 947998871 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 (947998871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226137 + ... + 230290.

It is an arithmetic number, because the mean of its divisors is an integer number (124148416).

Almost surely, 2^947998879 is an apocalyptic number.

947998879 is a deficient number, since it is larger than the sum of its proper divisors (45188449).

947998879 is a wasteful number, since it uses less digits than its factorization.

947998879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456525.

The product of its digits is 82301184, while the sum is 70.

The square root of 947998879 is about 30789.5904324822. The cubic root of 947998879 is about 982.3568426589.

The spelling of 947998879 in words is "nine hundred forty-seven million, nine hundred ninety-eight thousand, eight hundred seventy-nine".