388380049 has 2 divisors, whose sum is σ = 388380050. Its totient is φ = 388380048.

The previous prime is 388380029. The next prime is 388380071. The reversal of 388380049 is 940083883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383885649 + 4494400 = 19593^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 388380049 - 2⁵ = 388380017 is a prime.

It is a super-2 number, since 2×388380049² = 301678124922484802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388379987 and 388380014.

It is not a weakly prime, because it can be changed into another prime (388380029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194190024 + 194190025.

It is an arithmetic number, because the mean of its divisors is an integer number (194190025).

Almost surely, 2^388380049 is an apocalyptic number.

It is an amenable number.

388380049 is a deficient number, since it is larger than the sum of its proper divisors (1).

388380049 is an equidigital number, since it uses as much as digits as its factorization.

388380049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 388380049 is about 19707.3602747806. The cubic root of 388380049 is about 729.6013642644.

The spelling of 388380049 in words is "three hundred eighty-eight million, three hundred eighty thousand, forty-nine".