9428915569 has 4 divisors (see below), whose sum is σ = 9429667444. Its totient is φ = 9428163696.

The previous prime is 9428915563. The next prime is 9428915579. The reversal of 9428915569 is 9655198249.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9655198249 = 49339 ⋅195691.

It can be written as a sum of positive squares in 2 ways, for example, as 7510475569 + 1918440000 = 86663^2 + 43800^2 .

It is a cyclic number.

It is not a de Polignac number, because 9428915569 - 2¹⁹ = 9428391281 is a prime.

It is a super-2 number, since 2×9428915569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9428915563) 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, 356802 + ... + 382315.

It is an arithmetic number, because the mean of its divisors is an integer number (2357416861).

Almost surely, 2^9428915569 is an apocalyptic number.

It is an amenable number.

9428915569 is a deficient number, since it is larger than the sum of its proper divisors (751875).

9428915569 is a wasteful number, since it uses less digits than its factorization.

9428915569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751874.

The product of its digits is 6998400, while the sum is 58.

The square root of 9428915569 is about 97102.6033070175. The cubic root of 9428915569 is about 2112.6160859798.

The spelling of 9428915569 in words is "nine billion, four hundred twenty-eight million, nine hundred fifteen thousand, five hundred sixty-nine".