9471621 has 4 divisors (see below), whose sum is σ = 12628832. Its totient is φ = 6314412.

The previous prime is 9471619. The next prime is 9471629. The reversal of 9471621 is 1261749.

It is a happy number.

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 not a de Polignac number, because 9471621 - 2¹ = 9471619 is a prime.

It is a Duffinian number.

9471621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9471629) 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, 1578601 + ... + 1578606.

It is an arithmetic number, because the mean of its divisors is an integer number (3157208).

Almost surely, 2^9471621 is an apocalyptic number.

It is an amenable number.

9471621 is a deficient number, since it is larger than the sum of its proper divisors (3157211).

9471621 is a wasteful number, since it uses less digits than its factorization.

9471621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157210.

The product of its digits is 3024, while the sum is 30.

The square root of 9471621 is about 3077.5998765272. The cubic root of 9471621 is about 211.5800768713.

The spelling of 9471621 in words is "nine million, four hundred seventy-one thousand, six hundred twenty-one".