9745399215 has 12 divisors (see below), whose sum is σ = 16892025384. Its totient is φ = 5197546224.

The previous prime is 9745399211. The next prime is 9745399217. The reversal of 9745399215 is 5129935479.

9745399215 is a `hidden beast` number, since 9 + 7 + 4 + 539 + 92 + 15 = 666.

It is not a de Polignac number, because 9745399215 - 2² = 9745399211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9745399211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108282169 + ... + 108282258.

It is an arithmetic number, because the mean of its divisors is an integer number (1407668782).

Almost surely, 2^9745399215 is an apocalyptic number.

9745399215 is a deficient number, since it is larger than the sum of its proper divisors (7146626169).

9745399215 is a wasteful number, since it uses less digits than its factorization.

9745399215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216564438 (or 216564435 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The square root of 9745399215 is about 98718.7885612460. The cubic root of 9745399215 is about 2135.9932609043.

The spelling of 9745399215 in words is "nine billion, seven hundred forty-five million, three hundred ninety-nine thousand, two hundred fifteen".