9477421669 has 4 divisors (see below), whose sum is σ = 9479941344. Its totient is φ = 9474901996.

The previous prime is 9477421637. The next prime is 9477421687. The reversal of 9477421669 is 9661247749.

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 a cyclic number.

It is not a de Polignac number, because 9477421669 - 2⁵ = 9477421637 is a prime.

It is a super-2 number, since 2×9477421669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9477421619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254187 + ... + 1261720.

It is an arithmetic number, because the mean of its divisors is an integer number (2369985336).

Almost surely, 2^9477421669 is an apocalyptic number.

It is an amenable number.

9477421669 is a deficient number, since it is larger than the sum of its proper divisors (2519675).

9477421669 is a wasteful number, since it uses less digits than its factorization.

9477421669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519674.

The product of its digits is 4572288, while the sum is 55.

The square root of 9477421669 is about 97352.0501530399. The cubic root of 9477421669 is about 2116.2326045214.

The spelling of 9477421669 in words is "nine billion, four hundred seventy-seven million, four hundred twenty-one thousand, six hundred sixty-nine".