388774049 has 2 divisors, whose sum is σ = 388774050. Its totient is φ = 388774048.

The previous prime is 388774039. The next prime is 388774073. The reversal of 388774049 is 940477883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314814049 + 73960000 = 17743^2 + 8600^2 .

It is an emirp because it is prime and its reverse (940477883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388774049 - 2²⁸ = 120338593 is a prime.

It is a super-2 number, since 2×388774049² = 302290522351708802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388773988 and 388774006.

It is not a weakly prime, because it can be changed into another prime (388774039) 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, 194387024 + 194387025.

It is an arithmetic number, because the mean of its divisors is an integer number (194387025).

Almost surely, 2^388774049 is an apocalyptic number.

It is an amenable number.

388774049 is a deficient number, since it is larger than the sum of its proper divisors (1).

388774049 is an equidigital number, since it uses as much as digits as its factorization.

388774049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The square root of 388774049 is about 19717.3540060526. The cubic root of 388774049 is about 729.8480005042.

The spelling of 388774049 in words is "three hundred eighty-eight million, seven hundred seventy-four thousand, forty-nine".