9827421 has 8 divisors (see below), whose sum is σ = 13199424. Its totient is φ = 6503520.

The previous prime is 9827407. The next prime is 9827437. The reversal of 9827421 is 1247289.

It is a happy number.

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

It is not a de Polignac number, because 9827421 - 2⁶ = 9827357 is a prime.

It is a super-2 number, since 2×9827421² = 193156407022482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9827471) 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, 11545 + ... + 12366.

It is an arithmetic number, because the mean of its divisors is an integer number (1649928).

Almost surely, 2^9827421 is an apocalyptic number.

It is an amenable number.

9827421 is a deficient number, since it is larger than the sum of its proper divisors (3372003).

9827421 is a wasteful number, since it uses less digits than its factorization.

9827421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24051.

The product of its digits is 8064, while the sum is 33.

The square root of 9827421 is about 3134.8717677124. The cubic root of 9827421 is about 214.1969029430.

The spelling of 9827421 in words is "nine million, eight hundred twenty-seven thousand, four hundred twenty-one".