387199069 has 2 divisors, whose sum is σ = 387199070. Its totient is φ = 387199068.

The previous prime is 387199063. The next prime is 387199093. The reversal of 387199069 is 960991783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361494169 + 25704900 = 19013^2 + 5070^2 .

It is a cyclic number.

It is not a de Polignac number, because 387199069 - 2³ = 387199061 is a prime.

It is a super-2 number, since 2×387199069² = 299846238068933522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387199061) 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, 193599534 + 193599535.

It is an arithmetic number, because the mean of its divisors is an integer number (193599535).

Almost surely, 2^387199069 is an apocalyptic number.

It is an amenable number.

387199069 is a deficient number, since it is larger than the sum of its proper divisors (1).

387199069 is an equidigital number, since it uses as much as digits as its factorization.

387199069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 387199069 is about 19677.3745454011. The cubic root of 387199069 is about 728.8610932693.

The spelling of 387199069 in words is "three hundred eighty-seven million, one hundred ninety-nine thousand, sixty-nine".