1423989937 has 2 divisors, whose sum is σ = 1423989938. Its totient is φ = 1423989936.

The previous prime is 1423989907. The next prime is 1423989971. The reversal of 1423989937 is 7399893241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1082146816 + 341843121 = 32896^2 + 18489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423989937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423989907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711994968 + 711994969.

It is an arithmetic number, because the mean of its divisors is an integer number (711994969).

Almost surely, 2^1423989937 is an apocalyptic number.

It is an amenable number.

1423989937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423989937 is an equidigital number, since it uses as much as digits as its factorization.

1423989937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 1423989937 is about 37735.7911935075. The cubic root of 1423989937 is about 1125.0426155379.

The spelling of 1423989937 in words is "one billion, four hundred twenty-three million, nine hundred eighty-nine thousand, nine hundred thirty-seven".