3988946 has 8 divisors (see below), whose sum is σ = 6443724. Its totient is φ = 1841040.

The previous prime is 3988909. The next prime is 3988961. The reversal of 3988946 is 6498893.

It can be written as a sum of positive squares in 2 ways, for example, as 3463321 + 525625 = 1861^2 + 725^2 .

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

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 3988946.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76685 + ... + 76736.

Almost surely, 2^3988946 is an apocalyptic number.

3988946 is a deficient number, since it is larger than the sum of its proper divisors (2454778).

3988946 is a wasteful number, since it uses less digits than its factorization.

3988946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153436.

The product of its digits is 373248, while the sum is 47.

The square root of 3988946 is about 1997.2345881243. The cubic root of 3988946 is about 158.5937441975.

The spelling of 3988946 in words is "three million, nine hundred eighty-eight thousand, nine hundred forty-six".