3981069 has 28 divisors (see below), whose sum is σ = 6155776. Its totient is φ = 2571912.

The previous prime is 3981067. The next prime is 3981071. The reversal of 3981069 is 9601893.

It is an interprime number because it is at equal distance from previous prime (3981067) and next prime (3981071).

It is not a de Polignac number, because 3981069 - 2¹ = 3981067 is a prime.

It is a super-2 number, since 2×3981069² = 31697820765522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981067) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 31284 + ... + 31410.

Almost surely, 2^3981069 is an apocalyptic number.

It is an amenable number.

3981069 is a deficient number, since it is larger than the sum of its proper divisors (2174707).

3981069 is an equidigital number, since it uses as much as digits as its factorization.

3981069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 3981069 is about 1995.2616369790. The cubic root of 3981069 is about 158.4892833430.

The spelling of 3981069 in words is "three million, nine hundred eighty-one thousand, sixty-nine".