3981069401 has 16 divisors (see below), whose sum is σ = 4307293584. Its totient is φ = 3665485824.

The previous prime is 3981069397. The next prime is 3981069431. The reversal of 3981069401 is 1049601893.

3981069401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 856147600 + 3124921801 = 29260^2 + 55901^2 .

It is a cyclic number.

It is not a de Polignac number, because 3981069401 - 2² = 3981069397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981069431) 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, 311795 + ... + 324311.

It is an arithmetic number, because the mean of its divisors is an integer number (269205849).

Almost surely, 2^3981069401 is an apocalyptic number.

It is an amenable number.

3981069401 is a deficient number, since it is larger than the sum of its proper divisors (326224183).

3981069401 is a wasteful number, since it uses less digits than its factorization.

3981069401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12940.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 3981069401 is about 63095.7161858077. The cubic root of 3981069401 is about 1584.8928866438.

The spelling of 3981069401 in words is "three billion, nine hundred eighty-one million, sixty-nine thousand, four hundred one".