4000129379 has 4 divisors (see below), whose sum is σ = 4001074176. Its totient is φ = 3999184584.

The previous prime is 4000129339. The next prime is 4000129381. The reversal of 4000129379 is 9739210004.

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

It is a cyclic number.

It is not a de Polignac number, because 4000129379 - 2¹⁶ = 4000063843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000129339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466019 + ... + 474524.

It is an arithmetic number, because the mean of its divisors is an integer number (1000268544).

Almost surely, 2^4000129379 is an apocalyptic number.

4000129379 is a deficient number, since it is larger than the sum of its proper divisors (944797).

4000129379 is an equidigital number, since it uses as much as digits as its factorization.

4000129379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944796.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 4000129379 is about 63246.5760259004. The cubic root of 4000129379 is about 1587.4181664804.

The spelling of 4000129379 in words is "four billion, one hundred twenty-nine thousand, three hundred seventy-nine".