390863338 has 8 divisors (see below), whose sum is σ = 602140932. Its totient is φ = 190149696.

The previous prime is 390863321. The next prime is 390863339. The reversal of 390863338 is 833368093.

It can be written as a sum of positive squares in 2 ways, for example, as 307195729 + 83667609 = 17527^2 + 9147^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 390863294 and 390863303.

It is not an unprimeable number, because it can be changed into a prime (390863339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2640895 + ... + 2641042.

Almost surely, 2^390863338 is an apocalyptic number.

390863338 is a deficient number, since it is larger than the sum of its proper divisors (211277594).

390863338 is a wasteful number, since it uses less digits than its factorization.

390863338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5281976.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 390863338 is about 19770.2639840747. The cubic root of 390863338 is about 731.1530772946.

It can be divided in two parts, 39086 and 3338, that added together give a palindrome (42424).

The spelling of 390863338 in words is "three hundred ninety million, eight hundred sixty-three thousand, three hundred thirty-eight".