387793117 has 2 divisors, whose sum is σ = 387793118. Its totient is φ = 387793116.

The previous prime is 387793111. The next prime is 387793127. The reversal of 387793117 is 711397783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 330548761 + 57244356 = 18181^2 + 7566^2 .

It is a cyclic number.

It is not a de Polignac number, because 387793117 - 2⁷ = 387792989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387793111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193896558 + 193896559.

It is an arithmetic number, because the mean of its divisors is an integer number (193896559).

Almost surely, 2^387793117 is an apocalyptic number.

It is an amenable number.

387793117 is a deficient number, since it is larger than the sum of its proper divisors (1).

387793117 is an equidigital number, since it uses as much as digits as its factorization.

387793117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 46.

The square root of 387793117 is about 19692.4634568659. The cubic root of 387793117 is about 729.2336468815.

The spelling of 387793117 in words is "three hundred eighty-seven million, seven hundred ninety-three thousand, one hundred seventeen".