947346639 has 8 divisors (see below), whose sum is σ = 1303875072. Its totient is φ = 611191320.

The previous prime is 947346629. The next prime is 947346667. The reversal of 947346639 is 936643749.

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

It is not a de Polignac number, because 947346639 - 2¹⁹ = 946822351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 947346591 and 947346600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947346629) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5093169 + ... + 5093354.

It is an arithmetic number, because the mean of its divisors is an integer number (162984384).

Almost surely, 2^947346639 is an apocalyptic number.

947346639 is a deficient number, since it is larger than the sum of its proper divisors (356528433).

947346639 is a wasteful number, since it uses less digits than its factorization.

947346639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10186557.

The product of its digits is 2939328, while the sum is 51.

The square root of 947346639 is about 30778.9967185417. The cubic root of 947346639 is about 982.1314980084.

The spelling of 947346639 in words is "nine hundred forty-seven million, three hundred forty-six thousand, six hundred thirty-nine".