387790129 has 8 divisors (see below), whose sum is σ = 400732928. Its totient is φ = 374874480.

The previous prime is 387790121. The next prime is 387790141. The reversal of 387790129 is 921097783.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 387790129 - 2³ = 387790121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387790121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24634 + ... + 37180.

It is an arithmetic number, because the mean of its divisors is an integer number (50091616).

Almost surely, 2^387790129 is an apocalyptic number.

It is an amenable number.

387790129 is a deficient number, since it is larger than the sum of its proper divisors (12942799).

387790129 is a wasteful number, since it uses less digits than its factorization.

387790129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13575.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 387790129 is about 19692.3875901324. The cubic root of 387790129 is about 729.2317739277.

The spelling of 387790129 in words is "three hundred eighty-seven million, seven hundred ninety thousand, one hundred twenty-nine".