396850891 has 8 divisors (see below), whose sum is σ = 423027200. Its totient is φ = 371203560.

The previous prime is 396850889. The next prime is 396850903. The reversal of 396850891 is 198058693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 396850891 - 2¹ = 396850889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396850841) 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, 130695 + ... + 133696.

It is an arithmetic number, because the mean of its divisors is an integer number (52878400).

Almost surely, 2^396850891 is an apocalyptic number.

396850891 is a deficient number, since it is larger than the sum of its proper divisors (26176309).

396850891 is a wasteful number, since it uses less digits than its factorization.

396850891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264489.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 396850891 is about 19921.1167106666. The cubic root of 396850891 is about 734.8676337754.

The spelling of 396850891 in words is "three hundred ninety-six million, eight hundred fifty thousand, eight hundred ninety-one".