9944712757 has 4 divisors (see below), whose sum is σ = 11365386016. Its totient is φ = 8524039500.

The previous prime is 9944712733. The next prime is 9944712761. The reversal of 9944712757 is 7572174499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7572174499 = 233 ⋅32498603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9944712757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9944712698 and 9944712707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9944710757) 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, 710336619 + ... + 710336632.

It is an arithmetic number, because the mean of its divisors is an integer number (2841346504).

Almost surely, 2^9944712757 is an apocalyptic number.

It is an amenable number.

9944712757 is a deficient number, since it is larger than the sum of its proper divisors (1420673259).

9944712757 is a wasteful number, since it uses less digits than its factorization.

9944712757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420673258.

The product of its digits is 4445280, while the sum is 55.

The square root of 9944712757 is about 99723.1806402102. The cubic root of 9944712757 is about 2150.4569252042.

The spelling of 9944712757 in words is "nine billion, nine hundred forty-four million, seven hundred twelve thousand, seven hundred fifty-seven".