396250989 has 8 divisors (see below), whose sum is σ = 530990400. Its totient is φ = 262839456.

The previous prime is 396250961. The next prime is 396250999. The reversal of 396250989 is 989052693.

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

It is not a de Polignac number, because 396250989 - 2¹³ = 396242797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396250919) 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, 331272 + ... + 332465.

It is an arithmetic number, because the mean of its divisors is an integer number (66373800).

Almost surely, 2^396250989 is an apocalyptic number.

It is an amenable number.

396250989 is a deficient number, since it is larger than the sum of its proper divisors (134739411).

396250989 is a wasteful number, since it uses less digits than its factorization.

396250989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663939.

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 396250989 is about 19906.0540790986. The cubic root of 396250989 is about 734.4971580316.

The spelling of 396250989 in words is "three hundred ninety-six million, two hundred fifty thousand, nine hundred eighty-nine".