3988770 has 32 divisors (see below), whose sum is σ = 9884160. Its totient is φ = 1029120.

The previous prime is 3988763. The next prime is 3988771. The reversal of 3988770 is 778893.

It is a super-2 number, since 2×3988770² = 31820572225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3988771) 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, 1215 + ... + 3074.

It is an arithmetic number, because the mean of its divisors is an integer number (308880).

Almost surely, 2^3988770 is an apocalyptic number.

3988770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3988770 is an abundant number, since it is smaller than the sum of its proper divisors (5895390).

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

3988770 is a wasteful number, since it uses less digits than its factorization.

3988770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 3988770 is about 1997.1905267150. The cubic root of 3988770 is about 158.5914116757.

The spelling of 3988770 in words is "three million, nine hundred eighty-eight thousand, seven hundred seventy".