3967001 has 4 divisors (see below), whose sum is σ = 4200372. Its totient is φ = 3733632.

The previous prime is 3966961. The next prime is 3967027. The reversal of 3967001 is 1007693.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3701776 + 265225 = 1924^2 + 515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3967001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3967081) 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, 116660 + ... + 116693.

It is an arithmetic number, because the mean of its divisors is an integer number (1050093).

Almost surely, 2^3967001 is an apocalyptic number.

It is an amenable number.

3967001 is a deficient number, since it is larger than the sum of its proper divisors (233371).

3967001 is a wasteful number, since it uses less digits than its factorization.

3967001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233370.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 3967001 is about 1991.7331648592. The cubic root of 3967001 is about 158.3023772045.

The spelling of 3967001 in words is "three million, nine hundred sixty-seven thousand, one".