947440066 has 16 divisors (see below), whose sum is σ = 1448478720. Its totient is φ = 464698080.

The previous prime is 947440051. The next prime is 947440129. The reversal of 947440066 is 660044749.

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, 1651 + ... + 43561.

It is an arithmetic number, because the mean of its divisors is an integer number (90529920).

Almost surely, 2^947440066 is an apocalyptic number.

947440066 is a deficient number, since it is larger than the sum of its proper divisors (501038654).

947440066 is a wasteful number, since it uses less digits than its factorization.

947440066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42129.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 947440066 is about 30780.5143881645. The cubic root of 947440066 is about 982.1637827707.

The spelling of 947440066 in words is "nine hundred forty-seven million, four hundred forty thousand, sixty-six".