3943100 has 72 divisors (see below), whose sum is σ = 10082688. Its totient is φ = 1310400.

The previous prime is 3943091. The next prime is 3943103. The reversal of 3943100 is 13493.

It is a super-2 number, since 2×3943100² = 31096075220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30035 + ... + 30165.

Almost surely, 2^3943100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3943100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5041344).

3943100 is an abundant number, since it is smaller than the sum of its proper divisors (6139588).

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

3943100 is a wasteful number, since it uses less digits than its factorization.

3943100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 3943100 is about 1985.7240493080. The cubic root of 3943100 is about 157.9838150382.

Adding to 3943100 its reverse (13493), we get a palindrome (3956593).

The spelling of 3943100 in words is "three million, nine hundred forty-three thousand, one hundred".