947489837 has 4 divisors (see below), whose sum is σ = 1082845536. Its totient is φ = 812134140.

The previous prime is 947489833. The next prime is 947489839. The reversal of 947489837 is 738984749.

947489837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 738984749 = 2333 ⋅316753.

It is a cyclic number.

It is not a de Polignac number, because 947489837 - 2² = 947489833 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 (947489831) 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, 67677839 + ... + 67677852.

It is an arithmetic number, because the mean of its divisors is an integer number (270711384).

Almost surely, 2^947489837 is an apocalyptic number.

It is an amenable number.

947489837 is a deficient number, since it is larger than the sum of its proper divisors (135355699).

947489837 is a wasteful number, since it uses less digits than its factorization.

947489837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135355698.

The product of its digits is 12192768, while the sum is 59.

The square root of 947489837 is about 30781.3228598122. The cubic root of 947489837 is about 982.1809808393.

The spelling of 947489837 in words is "nine hundred forty-seven million, four hundred eighty-nine thousand, eight hundred thirty-seven".