396921234 has 16 divisors (see below), whose sum is σ = 796775040. Its totient is φ = 131818320.

The previous prime is 396921233. The next prime is 396921257. The reversal of 396921234 is 432129693.

It is a junction number, because it is equal to n+sod(n) for n = 396921192 and 396921201.

It is not an unprimeable number, because it can be changed into a prime (396921233) 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 7 ways as a sum of consecutive naturals, for example, 120429 + ... + 123680.

It is an arithmetic number, because the mean of its divisors is an integer number (49798440).

Almost surely, 2^396921234 is an apocalyptic number.

396921234 is an abundant number, since it is smaller than the sum of its proper divisors (399853806).

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

396921234 is a wasteful number, since it uses less digits than its factorization.

396921234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244385.

The product of its digits is 69984, while the sum is 39.

The square root of 396921234 is about 19922.8821710113. The cubic root of 396921234 is about 734.9110503677.

The spelling of 396921234 in words is "three hundred ninety-six million, nine hundred twenty-one thousand, two hundred thirty-four".