390321349 has 4 divisors (see below), whose sum is σ = 425805120. Its totient is φ = 354837580.

The previous prime is 390321319. The next prime is 390321359. The reversal of 390321349 is 943123093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 390321349 - 2⁹ = 390320837 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 (390321319) 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, 17741869 + ... + 17741890.

It is an arithmetic number, because the mean of its divisors is an integer number (106451280).

Almost surely, 2^390321349 is an apocalyptic number.

It is an amenable number.

390321349 is a deficient number, since it is larger than the sum of its proper divisors (35483771).

390321349 is a wasteful number, since it uses less digits than its factorization.

390321349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35483770.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 390321349 is about 19756.5520524205. The cubic root of 390321349 is about 730.8149708576.

It can be divided in two parts, 3903 and 21349, that added together give a palindrome (25252).

The spelling of 390321349 in words is "three hundred ninety million, three hundred twenty-one thousand, three hundred forty-nine".