9953421 has 4 divisors (see below), whose sum is σ = 13271232. Its totient is φ = 6635612.

The previous prime is 9953413. The next prime is 9953429. The reversal of 9953421 is 1243599.

9953421 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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.

It is an interprime number because it is at equal distance from previous prime (9953413) and next prime (9953429).

It is a cyclic number.

It is not a de Polignac number, because 9953421 - 2³ = 9953413 is a prime.

9953421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9953429) 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, 1658901 + ... + 1658906.

It is an arithmetic number, because the mean of its divisors is an integer number (3317808).

Almost surely, 2^9953421 is an apocalyptic number.

It is an amenable number.

9953421 is a deficient number, since it is larger than the sum of its proper divisors (3317811).

9953421 is a wasteful number, since it uses less digits than its factorization.

9953421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317810.

The product of its digits is 9720, while the sum is 33.

The square root of 9953421 is about 3154.9042774702. The cubic root of 9953421 is about 215.1084435804.

The spelling of 9953421 in words is "nine million, nine hundred fifty-three thousand, four hundred twenty-one".