9745421 has 16 divisors (see below), whose sum is σ = 11725440. Its totient is φ = 7922880.

The previous prime is 9745409. The next prime is 9745441. The reversal of 9745421 is 1245479.

It is a happy number.

It is not a de Polignac number, because 9745421 - 2¹⁴ = 9729037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9745441) 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, 11990 + ... + 12776.

It is an arithmetic number, because the mean of its divisors is an integer number (732840).

Almost surely, 2^9745421 is an apocalyptic number.

It is an amenable number.

9745421 is a deficient number, since it is larger than the sum of its proper divisors (1980019).

9745421 is a wasteful number, since it uses less digits than its factorization.

9745421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its digits is 10080, while the sum is 32.

The square root of 9745421 is about 3121.7656862744. The cubic root of 9745421 is about 213.5994852513.

The spelling of 9745421 in words is "nine million, seven hundred forty-five thousand, four hundred twenty-one".