115647869 has 2 divisors, whose sum is σ = 115647870. Its totient is φ = 115647868.

The previous prime is 115647827. The next prime is 115647881. The reversal of 115647869 is 968746511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76772644 + 38875225 = 8762^2 + 6235^2 .

It is an emirp because it is prime and its reverse (968746511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115647869 - 2¹⁶ = 115582333 is a prime.

It is a super-2 number, since 2×115647869² = 26748859208482322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115647809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57823934 + 57823935.

It is an arithmetic number, because the mean of its divisors is an integer number (57823935).

Almost surely, 2^115647869 is an apocalyptic number.

It is an amenable number.

115647869 is a deficient number, since it is larger than the sum of its proper divisors (1).

115647869 is an equidigital number, since it uses as much as digits as its factorization.

115647869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 115647869 is about 10753.9699181279. The cubic root of 115647869 is about 487.2059066860.

The spelling of 115647869 in words is "one hundred fifteen million, six hundred forty-seven thousand, eight hundred sixty-nine".