4000309939 has 2 divisors, whose sum is σ = 4000309940. Its totient is φ = 4000309938.

The previous prime is 4000309931. The next prime is 4000309961. The reversal of 4000309939 is 9399030004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4000309939 - 2³ = 4000309931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4000309898 and 4000309907.

It is not a weakly prime, because it can be changed into another prime (4000309931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000154969 + 2000154970.

It is an arithmetic number, because the mean of its divisors is an integer number (2000154970).

Almost surely, 2^4000309939 is an apocalyptic number.

4000309939 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000309939 is an equidigital number, since it uses as much as digits as its factorization.

4000309939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 4000309939 is about 63248.0034388438. The cubic root of 4000309939 is about 1587.4420507005.

The spelling of 4000309939 in words is "four billion, three hundred nine thousand, nine hundred thirty-nine".