396438020 has 48 divisors (see below), whose sum is σ = 930375936. Its totient is φ = 140640000.

The previous prime is 396438001. The next prime is 396438023. The reversal of 396438020 is 20834693.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (396438023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12956 + ... + 30995.

It is an arithmetic number, because the mean of its divisors is an integer number (19382832).

Almost surely, 2^396438020 is an apocalyptic number.

It is an amenable number.

396438020 is an abundant number, since it is smaller than the sum of its proper divisors (533937916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

396438020 is a wasteful number, since it uses less digits than its factorization.

396438020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44012 (or 44010 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 396438020 is about 19910.7513670379. The cubic root of 396438020 is about 734.6127010703.

The spelling of 396438020 in words is "three hundred ninety-six million, four hundred thirty-eight thousand, twenty".