3981130 has 8 divisors (see below), whose sum is σ = 7166052. Its totient is φ = 1592448.

The previous prime is 3981119. The next prime is 3981137. The reversal of 3981130 is 311893.

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 48841 = 1983^2 + 221^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 3981095 and 3981104.

It is not an unprimeable number, because it can be changed into a prime (3981137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199047 + ... + 199066.

Almost surely, 2^3981130 is an apocalyptic number.

3981130 is a deficient number, since it is larger than the sum of its proper divisors (3184922).

3981130 is a wasteful number, since it uses less digits than its factorization.

3981130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398120.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 3981130 is about 1995.2769231362. The cubic root of 3981130 is about 158.4900928238.

The spelling of 3981130 in words is "three million, nine hundred eighty-one thousand, one hundred thirty".