390740005 has 8 divisors (see below), whose sum is σ = 469935000. Its totient is φ = 311894016.

The previous prime is 390740003. The next prime is 390740033. The reversal of 390740005 is 500047093.

390740005 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 67387681 + 323352324 = 8209^2 + 17982^2 .

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 390740005 - 2¹ = 390740003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390740003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84780 + ... + 89269.

It is an arithmetic number, because the mean of its divisors is an integer number (58741875).

Almost surely, 2^390740005 is an apocalyptic number.

It is an amenable number.

390740005 is a deficient number, since it is larger than the sum of its proper divisors (79194995).

390740005 is a wasteful number, since it uses less digits than its factorization.

390740005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174503.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 390740005 is about 19767.1445838796. The cubic root of 390740005 is about 731.0761665349.

Adding to 390740005 its reverse (500047093), we get a palindrome (890787098).

The spelling of 390740005 in words is "three hundred ninety million, seven hundred forty thousand, five".