947883081 has 16 divisors (see below), whose sum is σ = 1277904960. Its totient is φ = 624907200.

The previous prime is 947883073. The next prime is 947883121. The reversal of 947883081 is 180388749.

It is not a de Polignac number, because 947883081 - 2³ = 947883073 is a prime.

It is a super-2 number, since 2×947883081² = 1796964670492105122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 947883081.

It is not an unprimeable number, because it can be changed into a prime (947883011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366250 + ... + 368828.

It is an arithmetic number, because the mean of its divisors is an integer number (79869060).

Almost surely, 2^947883081 is an apocalyptic number.

It is an amenable number.

947883081 is a deficient number, since it is larger than the sum of its proper divisors (330021879).

947883081 is a wasteful number, since it uses less digits than its factorization.

947883081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 947883081 is about 30787.7099018423. The cubic root of 947883081 is about 982.3168427559.

The spelling of 947883081 in words is "nine hundred forty-seven million, eight hundred eighty-three thousand, eighty-one".