3998732 has 6 divisors (see below), whose sum is σ = 6997788. Its totient is φ = 1999364.

The previous prime is 3998719. The next prime is 3998737. The reversal of 3998732 is 2378993.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3998732.

It is not an unprimeable number, because it can be changed into a prime (3998737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499838 + ... + 499845.

It is an arithmetic number, because the mean of its divisors is an integer number (1166298).

Almost surely, 2^3998732 is an apocalyptic number.

It is an amenable number.

3998732 is a deficient number, since it is larger than the sum of its proper divisors (2999056).

3998732 is a wasteful number, since it uses less digits than its factorization.

3998732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999687 (or 999685 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 3998732 is about 1999.6829748738. The cubic root of 3998732 is about 158.7233298863.

The spelling of 3998732 in words is "three million, nine hundred ninety-eight thousand, seven hundred thirty-two".