390330381 has 16 divisors (see below), whose sum is σ = 603168768. Its totient is φ = 219903600.

The previous prime is 390330361. The next prime is 390330397. The reversal of 390330381 is 183033093.

It is not a de Polignac number, because 390330381 - 2⁵ = 390330349 is a prime.

It is a super-2 number, since 2×390330381² = 304715612663210322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390330361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129405 + ... + 132386.

It is an arithmetic number, because the mean of its divisors is an integer number (37698048).

Almost surely, 2^390330381 is an apocalyptic number.

It is an amenable number.

390330381 is a deficient number, since it is larger than the sum of its proper divisors (212838387).

390330381 is a wasteful number, since it uses less digits than its factorization.

390330381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261872.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 390330381 is about 19756.7806334939. The cubic root of 390330381 is about 730.8206078111.

The spelling of 390330381 in words is "three hundred ninety million, three hundred thirty thousand, three hundred eighty-one".