3999830 has 8 divisors (see below), whose sum is σ = 7199712. Its totient is φ = 1599928.

The previous prime is 3999803. The next prime is 3999851. The reversal of 3999830 is 389993.

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

It is a congruent number.

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, 199982 + ... + 200001.

It is an arithmetic number, because the mean of its divisors is an integer number (899964).

Almost surely, 2^3999830 is an apocalyptic number.

3999830 is a deficient number, since it is larger than the sum of its proper divisors (3199882).

3999830 is a wasteful number, since it uses less digits than its factorization.

3999830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399990.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 3999830 is about 1999.9574995484. The cubic root of 3999830 is about 158.7378563468.

The spelling of 3999830 in words is "three million, nine hundred ninety-nine thousand, eight hundred thirty".