396859945 has 8 divisors (see below), whose sum is σ = 476345160. Its totient is φ = 317412480.

The previous prime is 396859877. The next prime is 396859979. The reversal of 396859945 is 549958693.

It can be written as a sum of positive squares in 4 ways, for example, as 150872089 + 245987856 = 12283^2 + 15684^2 .

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

It is not a de Polignac number, because 396859945 - 2¹¹ = 396857897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396859945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25375 + ... + 37915.

It is an arithmetic number, because the mean of its divisors is an integer number (59543145).

Almost surely, 2^396859945 is an apocalyptic number.

It is an amenable number.

396859945 is a deficient number, since it is larger than the sum of its proper divisors (79485215).

396859945 is a wasteful number, since it uses less digits than its factorization.

396859945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18875.

The product of its digits is 10497600, while the sum is 58.

The square root of 396859945 is about 19921.3439556672. The cubic root of 396859945 is about 734.8732223067.

The spelling of 396859945 in words is "three hundred ninety-six million, eight hundred fifty-nine thousand, nine hundred forty-five".