9957941389 has 16 divisors (see below), whose sum is σ = 11025976320. Its totient is φ = 8917562160.

The previous prime is 9957941377. The next prime is 9957941407. The reversal of 9957941389 is 9831497599.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9957941389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9957941389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9957941689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372034 + ... + 397900.

It is an arithmetic number, because the mean of its divisors is an integer number (689123520).

Almost surely, 2^9957941389 is an apocalyptic number.

It is an amenable number.

9957941389 is a deficient number, since it is larger than the sum of its proper divisors (1068034931).

9957941389 is a wasteful number, since it uses less digits than its factorization.

9957941389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26400.

The product of its digits is 22044960, while the sum is 64.

The square root of 9957941389 is about 99789.4853629379. The cubic root of 9957941389 is about 2151.4100279390.

The spelling of 9957941389 in words is "nine billion, nine hundred fifty-seven million, nine hundred forty-one thousand, three hundred eighty-nine".