387433 has 2 divisors, whose sum is σ = 387434. Its totient is φ = 387432.

The previous prime is 387403. The next prime is 387437. The reversal of 387433 is 334783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375769 + 11664 = 613^2 + 108^2 .

It is an emirp because it is prime and its reverse (334783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387433 - 2⁹ = 386921 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (387437) 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, 193716 + 193717.

It is an arithmetic number, because the mean of its divisors is an integer number (193717).

2³⁸⁷⁴³³ is an apocalyptic number.

It is an amenable number.

387433 is a deficient number, since it is larger than the sum of its proper divisors (1).

387433 is an equidigital number, since it uses as much as digits as its factorization.

387433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

The square root of 387433 is about 622.4411618780. The cubic root of 387433 is about 72.9007847133.

Subtracting from 387433 its reverse (334783), we obtain a triangular number (52650 = T₃₂₄).

It can be divided in two parts, 387 and 433, that added together give a triangular number (820 = T₄₀).

The spelling of 387433 in words is "three hundred eighty-seven thousand, four hundred thirty-three".