387970433 has 2 divisors, whose sum is σ = 387970434. Its totient is φ = 387970432.

The previous prime is 387970403. The next prime is 387970459. The reversal of 387970433 is 334079783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336245569 + 51724864 = 18337^2 + 7192^2 .

It is a cyclic number.

It is not a de Polignac number, because 387970433 - 2⁶ = 387970369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (387970403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193985216 + 193985217.

It is an arithmetic number, because the mean of its divisors is an integer number (193985217).

Almost surely, 2^387970433 is an apocalyptic number.

It is an amenable number.

387970433 is a deficient number, since it is larger than the sum of its proper divisors (1).

387970433 is an equidigital number, since it uses as much as digits as its factorization.

387970433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 387970433 is about 19696.9650707920. The cubic root of 387970433 is about 729.3447758011.

The spelling of 387970433 in words is "three hundred eighty-seven million, nine hundred seventy thousand, four hundred thirty-three".