3900115517 has 8 divisors (see below), whose sum is σ = 3933106176. Its totient is φ = 3867160752.

The previous prime is 3900115511. The next prime is 3900115519. The reversal of 3900115517 is 7155110093.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3900115517 - 2²⁴ = 3883338301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3900115511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237548 + ... + 253434.

It is an arithmetic number, because the mean of its divisors is an integer number (491638272).

Almost surely, 2^3900115517 is an apocalyptic number.

It is an amenable number.

3900115517 is a deficient number, since it is larger than the sum of its proper divisors (32990659).

3900115517 is a wasteful number, since it uses less digits than its factorization.

3900115517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17947.

The product of its (nonzero) digits is 4725, while the sum is 32.

The square root of 3900115517 is about 62450.9048533326. The cubic root of 3900115517 is about 1574.0764575716.

The spelling of 3900115517 in words is "three billion, nine hundred million, one hundred fifteen thousand, five hundred seventeen".