3981115 has 8 divisors (see below), whose sum is σ = 4809888. Its totient is φ = 3163200.

The previous prime is 3981101. The next prime is 3981119. The reversal of 3981115 is 5111893.

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

It is not a de Polignac number, because 3981115 - 2⁷ = 3980987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1882 + ... + 3391.

It is an arithmetic number, because the mean of its divisors is an integer number (601236).

Almost surely, 2^3981115 is an apocalyptic number.

3981115 is a deficient number, since it is larger than the sum of its proper divisors (828773).

3981115 is a wasteful number, since it uses less digits than its factorization.

3981115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429.

The product of its digits is 1080, while the sum is 28.

The square root of 3981115 is about 1995.2731642560. The cubic root of 3981115 is about 158.4898937719.

It can be divided in two parts, 3981 and 115, that added together give a 12-th power (4096 = 2¹²).

The spelling of 3981115 in words is "three million, nine hundred eighty-one thousand, one hundred fifteen".