3992145 has 16 divisors (see below), whose sum is σ = 6493632. Its totient is φ = 2093760.

The previous prime is 3992143. The next prime is 3992159. The reversal of 3992145 is 5412993.

It is not a de Polignac number, because 3992145 - 2¹ = 3992143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3992141) 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, 1267 + ... + 3096.

It is an arithmetic number, because the mean of its divisors is an integer number (405852).

Almost surely, 2^3992145 is an apocalyptic number.

It is an amenable number.

3992145 is a deficient number, since it is larger than the sum of its proper divisors (2501487).

3992145 is a wasteful number, since it uses less digits than its factorization.

3992145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432.

The product of its digits is 9720, while the sum is 33.

The square root of 3992145 is about 1998.0352849737. The cubic root of 3992145 is about 158.6361284785.

The spelling of 3992145 in words is "three million, nine hundred ninety-two thousand, one hundred forty-five".