947801640 has 32 divisors (see below), whose sum is σ = 2843405280. Its totient is φ = 252747072.

The previous prime is 947801623. The next prime is 947801683. The reversal of 947801640 is 46108749.

It is a happy number.

947801640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3949054 + ... + 3949293.

It is an arithmetic number, because the mean of its divisors is an integer number (88856415).

Almost surely, 2^947801640 is an apocalyptic number.

It is an amenable number.

947801640 is an abundant number, since it is smaller than the sum of its proper divisors (1895603640).

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

947801640 is a wasteful number, since it uses less digits than its factorization.

947801640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7898361 (or 7898357 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 947801640 is about 30786.3872515110. The cubic root of 947801640 is about 982.2887087807.

The spelling of 947801640 in words is "nine hundred forty-seven million, eight hundred one thousand, six hundred forty".