9421657 has 4 divisors (see below), whose sum is σ = 10767616. Its totient is φ = 8075700.

The previous prime is 9421637. The next prime is 9421661. The reversal of 9421657 is 7561249.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7561249 = 43 ⋅175843.

It is a cyclic number.

It is not a de Polignac number, because 9421657 - 2¹¹ = 9419609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9421637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672969 + ... + 672982.

It is an arithmetic number, because the mean of its divisors is an integer number (2691904).

Almost surely, 2^9421657 is an apocalyptic number.

It is an amenable number.

9421657 is a deficient number, since it is larger than the sum of its proper divisors (1345959).

9421657 is a wasteful number, since it uses less digits than its factorization.

9421657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345958.

The product of its digits is 15120, while the sum is 34.

The square root of 9421657 is about 3069.4717786616. The cubic root of 9421657 is about 211.2073835348.

The spelling of 9421657 in words is "nine million, four hundred twenty-one thousand, six hundred fifty-seven".