396389390 has 8 divisors (see below), whose sum is σ = 713500920. Its totient is φ = 158555752.

The previous prime is 396389377. The next prime is 396389393. The reversal of 396389390 is 93983693.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396389393) 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, 19819460 + ... + 19819479.

It is an arithmetic number, because the mean of its divisors is an integer number (89187615).

Almost surely, 2^396389390 is an apocalyptic number.

396389390 is a deficient number, since it is larger than the sum of its proper divisors (317111530).

396389390 is a wasteful number, since it uses less digits than its factorization.

396389390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39638946.

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 396389390 is about 19909.5301300659. The cubic root of 396389390 is about 734.5826621784.

The spelling of 396389390 in words is "three hundred ninety-six million, three hundred eighty-nine thousand, three hundred ninety".