9891434 has 16 divisors (see below), whose sum is σ = 17304000. Its totient is φ = 4238892.

The previous prime is 9891391. The next prime is 9891439. The reversal of 9891434 is 4341989.

It is not an unprimeable number, because it can be changed into a prime (9891439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6524 + ... + 7895.

It is an arithmetic number, because the mean of its divisors is an integer number (1081500).

Almost surely, 2^9891434 is an apocalyptic number.

9891434 is a deficient number, since it is larger than the sum of its proper divisors (7412566).

9891434 is a wasteful number, since it uses less digits than its factorization.

9891434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14442 (or 14428 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 9891434 is about 3145.0650231752. The cubic root of 9891434 is about 214.6609691830.

The spelling of 9891434 in words is "nine million, eight hundred ninety-one thousand, four hundred thirty-four".