947079169405 has 4 divisors (see below), whose sum is σ = 1136495003292. Its totient is φ = 757663335520.

The previous prime is 947079169363. The next prime is 947079169429. The reversal of 947079169405 is 504961970749.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504961970749 = 106397 ⋅4746017.

It can be written as a sum of positive squares in 2 ways, for example, as 305628748569 + 641450420836 = 552837^2 + 800906^2 .

It is not a de Polignac number, because 947079169405 - 2⁷ = 947079169277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94707916936 + ... + 94707916945.

It is an arithmetic number, because the mean of its divisors is an integer number (284123750823).

Almost surely, 2^947079169405 is an apocalyptic number.

It is an amenable number.

947079169405 is a deficient number, since it is larger than the sum of its proper divisors (189415833887).

947079169405 is a wasteful number, since it uses less digits than its factorization.

947079169405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189415833886.

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 947079169405 in words is "nine hundred forty-seven billion, seventy-nine million, one hundred sixty-nine thousand, four hundred five".