396340842 has 16 divisors (see below), whose sum is σ = 793078272. Its totient is φ = 132047520.

The previous prime is 396340823. The next prime is 396340843. The reversal of 396340842 is 248043693.

It is a self number, because there is not a number n which added to its sum of digits gives 396340842.

It is not an unprimeable number, because it can be changed into a prime (396340843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2634 + ... + 28277.

It is an arithmetic number, because the mean of its divisors is an integer number (49567392).

Almost surely, 2^396340842 is an apocalyptic number.

396340842 is an abundant number, since it is smaller than the sum of its proper divisors (396737430).

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

396340842 is a wasteful number, since it uses less digits than its factorization.

396340842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33053.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 396340842 is about 19908.3108776209. The cubic root of 396340842 is about 734.5526714874.

The spelling of 396340842 in words is "three hundred ninety-six million, three hundred forty thousand, eight hundred forty-two".