115661469 has 16 divisors (see below), whose sum is σ = 192268800. Its totient is φ = 60083760.

The previous prime is 115661467. The next prime is 115661537. The reversal of 115661469 is 964166511.

It is not a de Polignac number, because 115661469 - 2¹ = 115661467 is a prime.

It is a super-2 number, since 2×115661469² = 26755150822475922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115661467) 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, 250119 + ... + 250580.

It is an arithmetic number, because the mean of its divisors is an integer number (12016800).

Almost surely, 2^115661469 is an apocalyptic number.

It is an amenable number.

115661469 is a deficient number, since it is larger than the sum of its proper divisors (76607331).

115661469 is a wasteful number, since it uses less digits than its factorization.

115661469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500720.

The product of its digits is 38880, while the sum is 39.

The square root of 115661469 is about 10754.6022241643. The cubic root of 115661469 is about 487.2250041430.

The spelling of 115661469 in words is "one hundred fifteen million, six hundred sixty-one thousand, four hundred sixty-nine".