9421487 has 4 divisors (see below), whose sum is σ = 9554256. Its totient is φ = 9288720.

The previous prime is 9421483. The next prime is 9421493. The reversal of 9421487 is 7841249.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7841249 = 13 ⋅603173.

It is a cyclic number.

It is not a de Polignac number, because 9421487 - 2² = 9421483 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 (9421483) 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, 66278 + ... + 66419.

It is an arithmetic number, because the mean of its divisors is an integer number (2388564).

Almost surely, 2^9421487 is an apocalyptic number.

9421487 is a deficient number, since it is larger than the sum of its proper divisors (132769).

9421487 is a wasteful number, since it uses less digits than its factorization.

9421487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132768.

The product of its digits is 16128, while the sum is 35.

The square root of 9421487 is about 3069.4440864756. Note that the first 3 decimals coincide. The cubic root of 9421487 is about 211.2061132179.

The spelling of 9421487 in words is "nine million, four hundred twenty-one thousand, four hundred eighty-seven".