3988380 has 48 divisors (see below), whose sum is σ = 12184704. Its totient is φ = 966720.

The previous prime is 3988351. The next prime is 3988381. The reversal of 3988380 is 838893.

3988380 = T₂₅₆ + T₂₅₇ + ... + T₃₄₃.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3988381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2362 + ... + 3681.

It is an arithmetic number, because the mean of its divisors is an integer number (253848).

Almost surely, 2^3988380 is an apocalyptic number.

3988380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3988380 is an abundant number, since it is smaller than the sum of its proper divisors (8196324).

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

3988380 is a wasteful number, since it uses less digits than its factorization.

3988380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066 (or 6064 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 3988380 is about 1997.0928871738. The cubic root of 3988380 is about 158.5862427752.

It can be divided in two parts, 398 and 8380, that added together give a palindrome (8778).

The spelling of 3988380 in words is "three million, nine hundred eighty-eight thousand, three hundred eighty".