4072731989 has 2 divisors, whose sum is σ = 4072731990. Its totient is φ = 4072731988.

The previous prime is 4072731889. The next prime is 4072732003. The reversal of 4072731989 is 9891372704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4072609489 + 122500 = 63817^2 + 350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4072731989 is a prime.

It is a super-2 number, since 2×4072731989² = 33174291708447792242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4072731389) 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 as a sum of consecutive naturals, namely, 2036365994 + 2036365995.

It is an arithmetic number, because the mean of its divisors is an integer number (2036365995).

Almost surely, 2^4072731989 is an apocalyptic number.

It is an amenable number.

4072731989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4072731989 is an equidigital number, since it uses as much as digits as its factorization.

4072731989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 4072731989 is about 63817.9597683912. The cubic root of 4072731989 is about 1596.9645560093.

The spelling of 4072731989 in words is "four billion, seventy-two million, seven hundred thirty-one thousand, nine hundred eighty-nine".