9425621 has 4 divisors (see below), whose sum is σ = 9435552. Its totient is φ = 9415692.

The previous prime is 9425617. The next prime is 9425629. The reversal of 9425621 is 1265249.

It is a happy number.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9425621 - 2² = 9425617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9425629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371 + ... + 5496.

It is an arithmetic number, because the mean of its divisors is an integer number (2358888).

Almost surely, 2^9425621 is an apocalyptic number.

It is an amenable number.

9425621 is a deficient number, since it is larger than the sum of its proper divisors (9931).

9425621 is a wasteful number, since it uses less digits than its factorization.

9425621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9930.

The product of its digits is 4320, while the sum is 29.

The square root of 9425621 is about 3070.1174244644. The cubic root of 9425621 is about 211.2370000053.

The spelling of 9425621 in words is "nine million, four hundred twenty-five thousand, six hundred twenty-one".