3998850 has 48 divisors (see below), whose sum is σ = 10124352. Its totient is φ = 1044160.

The previous prime is 3998837. The next prime is 3998881. The reversal of 3998850 is 588993.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7699 + ... + 8201.

It is an arithmetic number, because the mean of its divisors is an integer number (210924).

Almost surely, 2^3998850 is an apocalyptic number.

3998850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3998850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5062176).

3998850 is an abundant number, since it is smaller than the sum of its proper divisors (6125502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3998850 is a wasteful number, since it uses less digits than its factorization.

3998850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 3998850 is about 1999.7124793330. The cubic root of 3998850 is about 158.7248911453.

It can be divided in two parts, 39 and 98850, that added together give a palindrome (98889).

The spelling of 3998850 in words is "three million, nine hundred ninety-eight thousand, eight hundred fifty".