9206421 has 8 divisors (see below), whose sum is σ = 14028864. Its totient is φ = 5260800.

The previous prime is 9206413. The next prime is 9206437. The reversal of 9206421 is 1246029.

9206421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9206421 - 2³ = 9206413 is a prime.

9206421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9206391 and 9206400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9206221) 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, 219180 + ... + 219221.

It is an arithmetic number, because the mean of its divisors is an integer number (1753608).

Almost surely, 2^9206421 is an apocalyptic number.

It is an amenable number.

9206421 is a deficient number, since it is larger than the sum of its proper divisors (4822443).

9206421 is a wasteful number, since it uses less digits than its factorization.

9206421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438411.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 9206421 is about 3034.2084635041. The cubic root of 9206421 is about 209.5866472298.

The spelling of 9206421 in words is "nine million, two hundred six thousand, four hundred twenty-one".