3981064 has 8 divisors (see below), whose sum is σ = 7464510. Its totient is φ = 1990528.

The previous prime is 3981037. The next prime is 3981067. The reversal of 3981064 is 4601893.

It can be written as a sum of positive squares in only one way, i.e., 2748964 + 1232100 = 1658^2 + 1110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam 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 as a sum of consecutive naturals, namely, 248809 + ... + 248824.

Almost surely, 2^3981064 is an apocalyptic number.

It is an amenable number.

3981064 is a deficient number, since it is larger than the sum of its proper divisors (3483446).

3981064 is a wasteful number, since it uses less digits than its factorization.

3981064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497639 (or 497635 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 3981064 is about 1995.2603840101. The cubic root of 3981064 is about 158.4892169918.

The spelling of 3981064 in words is "three million, nine hundred eighty-one thousand, sixty-four".