9947828097 has 6 divisors (see below), whose sum is σ = 14369085042. Its totient is φ = 6631885392.

The previous prime is 9947828063. The next prime is 9947828117. The reversal of 9947828097 is 7908287499.

It can be written as a sum of positive squares in only one way, i.e., 7720082496 + 2227745601 = 87864^2 + 47199^2 .

It is not a de Polignac number, because 9947828097 - 2³¹ = 7800344449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9947828017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552657108 + ... + 552657125.

It is an arithmetic number, because the mean of its divisors is an integer number (2394847507).

Almost surely, 2^9947828097 is an apocalyptic number.

It is an amenable number.

9947828097 is a deficient number, since it is larger than the sum of its proper divisors (4421256945).

9947828097 is a wasteful number, since it uses less digits than its factorization.

9947828097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105314239 (or 1105314236 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The square root of 9947828097 is about 99738.7993561182. The cubic root of 9947828097 is about 2150.6814567450.

The spelling of 9947828097 in words is "nine billion, nine hundred forty-seven million, eight hundred twenty-eight thousand, ninety-seven".