387407009 has 8 divisors (see below), whose sum is σ = 441001152. Its totient is φ = 336875440.

The previous prime is 387406997. The next prime is 387407011. The reversal of 387407009 is 900704783.

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

It is not a de Polignac number, because 387407009 - 2⁴ = 387406993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387407099) 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, 765374 + ... + 765879.

It is an arithmetic number, because the mean of its divisors is an integer number (55125144).

Almost surely, 2^387407009 is an apocalyptic number.

It is an amenable number.

387407009 is a deficient number, since it is larger than the sum of its proper divisors (53594143).

387407009 is a wasteful number, since it uses less digits than its factorization.

387407009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531287.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 387407009 is about 19682.6575695458. The cubic root of 387407009 is about 728.9915449025.

It can be divided in two parts, 38 and 7407009, that added together give a palindrome (7407047).

The spelling of 387407009 in words is "three hundred eighty-seven million, four hundred seven thousand, nine".