396835390 has 32 divisors (see below), whose sum is σ = 835338240. Its totient is φ = 132892704.

The previous prime is 396835381. The next prime is 396835393. The reversal of 396835390 is 93538693.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 396835390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396835393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62910 + ... + 68929.

It is an arithmetic number, because the mean of its divisors is an integer number (26104320).

Almost surely, 2^396835390 is an apocalyptic number.

396835390 is an abundant number, since it is smaller than the sum of its proper divisors (438502850).

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

396835390 is a wasteful number, since it uses less digits than its factorization.

396835390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131896.

The product of its (nonzero) digits is 524880, while the sum is 46.

The square root of 396835390 is about 19920.7276473526. The cubic root of 396835390 is about 734.8580656716.

The spelling of 396835390 in words is "three hundred ninety-six million, eight hundred thirty-five thousand, three hundred ninety".