388086949 has 2 divisors, whose sum is σ = 388086950. Its totient is φ = 388086948.

The previous prime is 388086929. The next prime is 388086971. The reversal of 388086949 is 949680883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360734049 + 27352900 = 18993^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 388086949 - 2¹¹ = 388084901 is a prime.

It is a super-2 number, since 2×388086949² = 301222959968257202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 388086949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388086929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194043474 + 194043475.

It is an arithmetic number, because the mean of its divisors is an integer number (194043475).

Almost surely, 2^388086949 is an apocalyptic number.

It is an amenable number.

388086949 is a deficient number, since it is larger than the sum of its proper divisors (1).

388086949 is an equidigital number, since it uses as much as digits as its factorization.

388086949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 388086949 is about 19699.9225632996. The cubic root of 388086949 is about 729.4177812185.

The spelling of 388086949 in words is "three hundred eighty-eight million, eighty-six thousand, nine hundred forty-nine".