947539845 has 48 divisors (see below), whose sum is σ = 1927785600. Its totient is φ = 421448832.

The previous prime is 947539841. The next prime is 947539849. The reversal of 947539845 is 548935749.

It is an interprime number because it is at equal distance from previous prime (947539841) and next prime (947539849).

It is not a de Polignac number, because 947539845 - 2² = 947539841 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 947539791 and 947539800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947539841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28995 + ... + 52304.

It is an arithmetic number, because the mean of its divisors is an integer number (40162200).

Almost surely, 2^947539845 is an apocalyptic number.

It is an amenable number.

947539845 is an abundant number, since it is smaller than the sum of its proper divisors (980245755).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

947539845 is a wasteful number, since it uses less digits than its factorization.

947539845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81354 (or 81351 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 947539845 is about 30782.1351598618. The cubic root of 947539845 is about 982.1982601952.

The spelling of 947539845 in words is "nine hundred forty-seven million, five hundred thirty-nine thousand, eight hundred forty-five".