9011421 has 12 divisors (see below), whose sum is σ = 13436800. Its totient is φ = 5813640.

The previous prime is 9011419. The next prime is 9011459. The reversal of 9011421 is 1241109.

It is not a de Polignac number, because 9011421 - 2¹ = 9011419 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9011394 and 9011403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9011221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15871 + ... + 16428.

Almost surely, 2^9011421 is an apocalyptic number.

It is an amenable number.

9011421 is a deficient number, since it is larger than the sum of its proper divisors (4425379).

9011421 is a wasteful number, since it uses less digits than its factorization.

9011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32336 (or 32333 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 9011421 is about 3001.9028964975. The cubic root of 9011421 is about 208.0963326584.

It can be divided in two parts, 90 and 11421, that added together give a palindrome (11511).

The spelling of 9011421 in words is "nine million, eleven thousand, four hundred twenty-one".