387199049 has 2 divisors, whose sum is σ = 387199050. Its totient is φ = 387199048.

The previous prime is 387199031. The next prime is 387199051. The reversal of 387199049 is 940991783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196897024 + 190302025 = 14032^2 + 13795^2 .

It is an emirp because it is prime and its reverse (940991783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387199049 - 2¹² = 387194953 is a prime.

It is a Sophie Germain prime.

Together with 387199051, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 387198988 and 387199006.

It is not a weakly prime, because it can be changed into another prime (387199009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193599524 + 193599525.

It is an arithmetic number, because the mean of its divisors is an integer number (193599525).

Almost surely, 2^387199049 is an apocalyptic number.

It is an amenable number.

387199049 is a deficient number, since it is larger than the sum of its proper divisors (1).

387199049 is an equidigital number, since it uses as much as digits as its factorization.

387199049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 387199049 is about 19677.3740372032. The cubic root of 387199049 is about 728.8610807200.

The spelling of 387199049 in words is "three hundred eighty-seven million, one hundred ninety-nine thousand, forty-nine".