3985520727 has 16 divisors (see below), whose sum is σ = 5365298432. Its totient is φ = 2631484800.

The previous prime is 3985520723. The next prime is 3985520761. The reversal of 3985520727 is 7270255893.

It is a happy number.

It is not a de Polignac number, because 3985520727 - 2² = 3985520723 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 (3985520723) 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, 139608 + ... + 165714.

It is an arithmetic number, because the mean of its divisors is an integer number (335331152).

Almost surely, 2^3985520727 is an apocalyptic number.

3985520727 is a deficient number, since it is larger than the sum of its proper divisors (1379777705).

3985520727 is a wasteful number, since it uses less digits than its factorization.

3985520727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26598.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 3985520727 is about 63130.9807226214. The cubic root of 3985520727 is about 1585.4833684489.

The spelling of 3985520727 in words is "three billion, nine hundred eighty-five million, five hundred twenty thousand, seven hundred twenty-seven".