3999284 has 24 divisors (see below), whose sum is σ = 7495488. Its totient is φ = 1860480.

The previous prime is 3999283. The next prime is 3999311. The reversal of 3999284 is 4829993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999283) 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, 6719 + ... + 7289.

It is an arithmetic number, because the mean of its divisors is an integer number (312312).

Almost surely, 2^3999284 is an apocalyptic number.

3999284 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3999284 is a deficient number, since it is larger than the sum of its proper divisors (3496204).

3999284 is a wasteful number, since it uses less digits than its factorization.

3999284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 693 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 3999284 is about 1999.8209919890. The cubic root of 3999284 is about 158.7306331387.

The spelling of 3999284 in words is "three million, nine hundred ninety-nine thousand, two hundred eighty-four".