386742913 has 2 divisors, whose sum is σ = 386742914. Its totient is φ = 386742912.

The previous prime is 386742901. The next prime is 386742919. The reversal of 386742913 is 319247683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249103089 + 137639824 = 15783^2 + 11732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386742913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 386742913.

It is not a weakly prime, because it can be changed into another prime (386742919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193371456 + 193371457.

It is an arithmetic number, because the mean of its divisors is an integer number (193371457).

Almost surely, 2^386742913 is an apocalyptic number.

It is an amenable number.

386742913 is a deficient number, since it is larger than the sum of its proper divisors (1).

386742913 is an equidigital number, since it uses as much as digits as its factorization.

386742913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 386742913 is about 19665.7802540352. The cubic root of 386742913 is about 728.5747590683.

The spelling of 386742913 in words is "three hundred eighty-six million, seven hundred forty-two thousand, nine hundred thirteen".