3992986 has 8 divisors (see below), whose sum is σ = 6182784. Its totient is φ = 1932060.

The previous prime is 3992959. The next prime is 3992987. The reversal of 3992986 is 6892993.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (3992987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32140 + ... + 32263.

It is an arithmetic number, because the mean of its divisors is an integer number (772848).

Almost surely, 2^3992986 is an apocalyptic number.

3992986 is a deficient number, since it is larger than the sum of its proper divisors (2189798).

3992986 is a wasteful number, since it uses less digits than its factorization.

3992986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64436.

The product of its digits is 209952, while the sum is 46.

The square root of 3992986 is about 1998.2457306347. The cubic root of 3992986 is about 158.6472673204.

It can be divided in two parts, 39 and 92986, that added together give a square (93025 = 305²).

The spelling of 3992986 in words is "three million, nine hundred ninety-two thousand, nine hundred eighty-six".