396745842 has 16 divisors (see below), whose sum is σ = 793812960. Its totient is φ = 132195072.

The previous prime is 396745831. The next prime is 396745849. The reversal of 396745842 is 248547693.

It is a junction number, because it is equal to n+sod(n) for n = 396745791 and 396745800.

It is not an unprimeable number, because it can be changed into a prime (396745849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4509 + ... + 28527.

It is an arithmetic number, because the mean of its divisors is an integer number (49613310).

Almost surely, 2^396745842 is an apocalyptic number.

396745842 is an abundant number, since it is smaller than the sum of its proper divisors (397067118).

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

396745842 is a wasteful number, since it uses less digits than its factorization.

396745842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26777.

The product of its digits is 1451520, while the sum is 48.

The square root of 396745842 is about 19918.4799118808. The cubic root of 396745842 is about 734.8027866465.

The spelling of 396745842 in words is "three hundred ninety-six million, seven hundred forty-five thousand, eight hundred forty-two".