947891122 has 8 divisors (see below), whose sum is σ = 1424260656. Its totient is φ = 473137572.

The previous prime is 947891101. The next prime is 947891149. The reversal of 947891122 is 221198749.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402528 + ... + 404875.

It is an arithmetic number, because the mean of its divisors is an integer number (178032582).

Almost surely, 2^947891122 is an apocalyptic number.

947891122 is a deficient number, since it is larger than the sum of its proper divisors (476369534).

947891122 is a wasteful number, since it uses less digits than its factorization.

947891122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807992.

The product of its digits is 72576, while the sum is 43.

The square root of 947891122 is about 30787.8404893880. The cubic root of 947891122 is about 982.3196204499.

The spelling of 947891122 in words is "nine hundred forty-seven million, eight hundred ninety-one thousand, one hundred twenty-two".