390794513 has 4 divisors (see below), whose sum is σ = 391723188. Its totient is φ = 389865840.

The previous prime is 390794507. The next prime is 390794531. The reversal of 390794513 is 315497093.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187361344 + 203433169 = 13688^2 + 14263^2 .

It is a cyclic number.

It is not a de Polignac number, because 390794513 - 2¹⁸ = 390532369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390794533) 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 3 ways as a sum of consecutive naturals, for example, 463706 + ... + 464547.

It is an arithmetic number, because the mean of its divisors is an integer number (97930797).

Almost surely, 2^390794513 is an apocalyptic number.

It is an amenable number.

390794513 is a deficient number, since it is larger than the sum of its proper divisors (928675).

390794513 is an equidigital number, since it uses as much as digits as its factorization.

390794513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928674.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 390794513 is about 19768.5232882985. The cubic root of 390794513 is about 731.1101598521.

The spelling of 390794513 in words is "three hundred ninety million, seven hundred ninety-four thousand, five hundred thirteen".