8903421 has 12 divisors (see below), whose sum is σ = 13208572. Its totient is φ = 5774976.

The previous prime is 8903407. The next prime is 8903431. The reversal of 8903421 is 1243098.

It can be written as a sum of positive squares in 2 ways, for example, as 7080921 + 1822500 = 2661^2 + 1350^2 .

It is not a de Polignac number, because 8903421 - 2⁶ = 8903357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8903431) 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, 13036 + ... + 13701.

Almost surely, 2^8903421 is an apocalyptic number.

It is an amenable number.

8903421 is a deficient number, since it is larger than the sum of its proper divisors (4305151).

8903421 is a wasteful number, since it uses less digits than its factorization.

8903421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26780 (or 26777 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 8903421 is about 2983.8600838511. The cubic root of 8903421 is about 207.2616588881.

The spelling of 8903421 in words is "eight million, nine hundred three thousand, four hundred twenty-one".