947978850 has 192 divisors, whose sum is σ = 2973309696. Its totient is φ = 194503680.

The previous prime is 947978849. The next prime is 947978851. The reversal of 947978850 is 58879749.

It is an interprime number because it is at equal distance from previous prime (947978849) and next prime (947978851).

It is not an unprimeable number, because it can be changed into a prime (947978851) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 504112 + ... + 505988.

It is an arithmetic number, because the mean of its divisors is an integer number (15485988).

Almost surely, 2^947978850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947978850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486654848).

947978850 is an abundant number, since it is smaller than the sum of its proper divisors (2025330846).

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

947978850 is a wasteful number, since it uses less digits than its factorization.

947978850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1944 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 57.

The square root of 947978850 is about 30789.2651747326. The cubic root of 947978850 is about 982.3499243091.

The spelling of 947978850 in words is "nine hundred forty-seven million, nine hundred seventy-eight thousand, eight hundred fifty".