4005001387 has 2 divisors, whose sum is σ = 4005001388. Its totient is φ = 4005001386.

The previous prime is 4005001373. The next prime is 4005001417. The reversal of 4005001387 is 7831005004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4005001387 - 2¹⁵ = 4004968619 is a prime.

It is a super-2 number, since 2×4005001387² = 32080072219743847538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4005001367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2002500693 + 2002500694.

It is an arithmetic number, because the mean of its divisors is an integer number (2002500694).

Almost surely, 2^4005001387 is an apocalyptic number.

4005001387 is a deficient number, since it is larger than the sum of its proper divisors (1).

4005001387 is an equidigital number, since it uses as much as digits as its factorization.

4005001387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 4005001387 is about 63285.0802875370. The cubic root of 4005001387 is about 1588.0623769983.

The spelling of 4005001387 in words is "four billion, five million, one thousand, three hundred eighty-seven".