947799630 has 96 divisors (see below), whose sum is σ = 2571004800. Its totient is φ = 251219232.

The previous prime is 947799599. The next prime is 947799631. The reversal of 947799630 is 36997749.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947799631) 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, 433881 + ... + 436059.

It is an arithmetic number, because the mean of its divisors is an integer number (26781300).

Almost surely, 2^947799630 is an apocalyptic number.

947799630 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 947799630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1285502400).

947799630 is an abundant number, since it is smaller than the sum of its proper divisors (1623205170).

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

947799630 is a wasteful number, since it uses less digits than its factorization.

947799630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

The square root of 947799630 is about 30786.3546071957. The cubic root of 947799630 is about 982.2880144013.

The spelling of 947799630 in words is "nine hundred forty-seven million, seven hundred ninety-nine thousand, six hundred thirty".