3996427 has 8 divisors (see below), whose sum is σ = 4159872. Its totient is φ = 3835200.

The previous prime is 3996413. The next prime is 3996431. The reversal of 3996427 is 7246993.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3996427 is a prime.

It is a Duffinian number.

3996427 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3996427.

It is not an unprimeable number, because it can be changed into a prime (3996467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3777 + ... + 4717.

It is an arithmetic number, because the mean of its divisors is an integer number (519984).

Almost surely, 2^3996427 is an apocalyptic number.

3996427 is a deficient number, since it is larger than the sum of its proper divisors (163445).

3996427 is a wasteful number, since it uses less digits than its factorization.

3996427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109.

The product of its digits is 81648, while the sum is 40.

The square root of 3996427 is about 1999.1065504370. The cubic root of 3996427 is about 158.6928262504.

It can be divided in two parts, 39 and 96427, that multiplied together give a triangular number (3760653 = T₂₇₄₂).

The spelling of 3996427 in words is "three million, nine hundred ninety-six thousand, four hundred twenty-seven".