390041005 has 8 divisors (see below), whose sum is σ = 468162072. Its totient is φ = 311957568.

The previous prime is 390040999. The next prime is 390041009. The reversal of 390041005 is 500140093.

It can be written as a sum of positive squares in 4 ways, for example, as 25918281 + 364122724 = 5091^2 + 19082^2 .

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 390041005 - 2³ = 390040997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390041009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24547 + ... + 37183.

It is an arithmetic number, because the mean of its divisors is an integer number (58520259).

Almost surely, 2^390041005 is an apocalyptic number.

It is an amenable number.

390041005 is a deficient number, since it is larger than the sum of its proper divisors (78121067).

390041005 is a wasteful number, since it uses less digits than its factorization.

390041005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18815.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 390041005 is about 19749.4558152877. The cubic root of 390041005 is about 730.6399623566.

Adding to 390041005 its reverse (500140093), we get a palindrome (890181098).

The spelling of 390041005 in words is "three hundred ninety million, forty-one thousand, five".