9624742921 has 8 divisors (see below), whose sum is σ = 9639821888. Its totient is φ = 9609678000.

The previous prime is 9624742913. The next prime is 9624742927. The reversal of 9624742921 is 1292474269.

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

It is a 3-Lehmer number, since φ(9624742921) divides (9624742921-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 9624742921 - 2³ = 9624742913 is a prime.

It is a super-2 number, since 2×9624742921² (a number of 21 digits) contains 22 as substring.

It is a deceptive number, since it divides R_9624742920.

It is not an unprimeable number, because it can be changed into a prime (9624742927) by changing a digit.

It is a Zeisel number, with parameters (1, 1170).

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2739556 + ... + 2743066.

It is an arithmetic number, because the mean of its divisors is an integer number (1204977736).

It is a Poulet number, since it divides 2^9624742920-1.

Almost surely, 2^9624742921 is an apocalyptic number.

It is an amenable number.

9624742921 is a deficient number, since it is larger than the sum of its proper divisors (15078967).

9624742921 is a wasteful number, since it uses less digits than its factorization.

9624742921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7023.

The product of its digits is 435456, while the sum is 46.

The square root of 9624742921 is about 98105.7741470909. The cubic root of 9624742921 is about 2127.1414939204.

The spelling of 9624742921 in words is "nine billion, six hundred twenty-four million, seven hundred forty-two thousand, nine hundred twenty-one".