387429289 has 12 divisors (see below), whose sum is σ = 433062912. Its totient is φ = 346086000.

The previous prime is 387429253. The next prime is 387429313. The reversal of 387429289 is 982924783.

It is a de Polignac number, because none of the positive numbers 2^k-387429289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387429689) 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 in 11 ways as a sum of consecutive naturals, for example, 31737 + ... + 42214.

It is an arithmetic number, because the mean of its divisors is an integer number (36088576).

Almost surely, 2^387429289 is an apocalyptic number.

It is an amenable number.

387429289 is a deficient number, since it is larger than the sum of its proper divisors (45633623).

387429289 is a wasteful number, since it uses less digits than its factorization.

387429289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74008 (or 73995 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 387429289 is about 19683.2235418897. The cubic root of 387429289 is about 729.0055195424.

The spelling of 387429289 in words is "three hundred eighty-seven million, four hundred twenty-nine thousand, two hundred eighty-nine".