3992645 has 8 divisors (see below), whose sum is σ = 4945920. Its totient is φ = 3090960.

The previous prime is 3992627. The next prime is 3992683. The reversal of 3992645 is 5462993.

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

It is not a de Polignac number, because 3992645 - 2¹⁴ = 3976261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3992599 and 3992608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12725 + ... + 13034.

It is an arithmetic number, because the mean of its divisors is an integer number (618240).

Almost surely, 2^3992645 is an apocalyptic number.

It is an amenable number.

3992645 is a deficient number, since it is larger than the sum of its proper divisors (953275).

3992645 is a wasteful number, since it uses less digits than its factorization.

3992645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25795.

The product of its digits is 58320, while the sum is 38.

The square root of 3992645 is about 1998.1604039716. The cubic root of 3992645 is about 158.6427510463.

The spelling of 3992645 in words is "three million, nine hundred ninety-two thousand, six hundred forty-five".