3998546 has 4 divisors (see below), whose sum is σ = 5997822. Its totient is φ = 1999272.

The previous prime is 3998539. The next prime is 3998551. The reversal of 3998546 is 6458993.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2146225 + 1852321 = 1465^2 + 1361^2 .

It is a super-2 number, since 2×3998546² = 31976740228232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3998497 and 3998506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999635 + ... + 999638.

Almost surely, 2^3998546 is an apocalyptic number.

3998546 is a deficient number, since it is larger than the sum of its proper divisors (1999276).

3998546 is a wasteful number, since it uses less digits than its factorization.

3998546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999275.

The product of its digits is 233280, while the sum is 44.

The square root of 3998546 is about 1999.6364669609. The cubic root of 3998546 is about 158.7208688564.

The spelling of 3998546 in words is "three million, nine hundred ninety-eight thousand, five hundred forty-six".