388949207 has 2 divisors, whose sum is σ = 388949208. Its totient is φ = 388949206.

The previous prime is 388949203. The next prime is 388949261. The reversal of 388949207 is 702949883.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (702949883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388949207 - 2² = 388949203 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388949203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194474603 + 194474604.

It is an arithmetic number, because the mean of its divisors is an integer number (194474604).

Almost surely, 2^388949207 is an apocalyptic number.

388949207 is a deficient number, since it is larger than the sum of its proper divisors (1).

388949207 is an equidigital number, since it uses as much as digits as its factorization.

388949207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 388949207 is about 19721.7952276156. The cubic root of 388949207 is about 729.9575924574.

The spelling of 388949207 in words is "three hundred eighty-eight million, nine hundred forty-nine thousand, two hundred seven".