9640440469 has 8 divisors (see below), whose sum is σ = 10560850560. Its totient is φ = 8727364800.

The previous prime is 9640440373. The next prime is 9640440479.

9640440469 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9640440469 - 2²⁹ = 9103569557 is a prime.

It is a super-2 number, since 2×9640440469² (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 (9640440479) 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 7 ways as a sum of consecutive naturals, for example, 1830852 + ... + 1836109.

It is an arithmetic number, because the mean of its divisors is an integer number (1320106320).

Almost surely, 2^9640440469 is an apocalyptic number.

It is an amenable number.

9640440469 is a deficient number, since it is larger than the sum of its proper divisors (920410091).

9640440469 is a wasteful number, since it uses less digits than its factorization.

9640440469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667211.

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 9640440469 is about 98185.7447341517. The cubic root of 9640440469 is about 2128.2972916859.

The spelling of 9640440469 in words is "nine billion, six hundred forty million, four hundred forty thousand, four hundred sixty-nine".