3992517 has 16 divisors (see below), whose sum is σ = 6120000. Its totient is φ = 2569392.

The previous prime is 3992503. The next prime is 3992519. The reversal of 3992517 is 7152993.

It is not a de Polignac number, because 3992517 - 2⁶ = 3992453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992519) 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, 1767 + ... + 3332.

It is an arithmetic number, because the mean of its divisors is an integer number (382500).

Almost surely, 2^3992517 is an apocalyptic number.

It is an amenable number.

3992517 is a deficient number, since it is larger than the sum of its proper divisors (2127483).

3992517 is a wasteful number, since it uses less digits than its factorization.

3992517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137 (or 5131 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 3992517 is about 1998.1283742543. The cubic root of 3992517 is about 158.6410557216.

It can be divided in two parts, 399 and 2517, that added together give a square (2916 = 54²).

The spelling of 3992517 in words is "three million, nine hundred ninety-two thousand, five hundred seventeen".