9772555389 has 8 divisors (see below), whose sum is σ = 13041956160. Its totient is φ = 6509095776.

The previous prime is 9772555327. The next prime is 9772555391. The reversal of 9772555389 is 9835552779.

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

It is not a de Polignac number, because 9772555389 - 2¹¹ = 9772553341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9772565389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481449 + ... + 1488030.

It is an arithmetic number, because the mean of its divisors is an integer number (1630244520).

Almost surely, 2^9772555389 is an apocalyptic number.

It is an amenable number.

9772555389 is a deficient number, since it is larger than the sum of its proper divisors (3269400771).

9772555389 is a wasteful number, since it uses less digits than its factorization.

9772555389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970579.

The product of its digits is 23814000, while the sum is 60.

The square root of 9772555389 is about 98856.2359641515. The cubic root of 9772555389 is about 2137.9754478505.

The spelling of 9772555389 in words is "nine billion, seven hundred seventy-two million, five hundred fifty-five thousand, three hundred eighty-nine".