396361289 has 4 divisors (see below), whose sum is σ = 396511380. Its totient is φ = 396211200.

The previous prime is 396361187. The next prime is 396361291. The reversal of 396361289 is 982163693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75342400 + 321018889 = 8680^2 + 17917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396361289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396331289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71012 + ... + 76389.

It is an arithmetic number, because the mean of its divisors is an integer number (99127845).

Almost surely, 2^396361289 is an apocalyptic number.

It is an amenable number.

396361289 is a deficient number, since it is larger than the sum of its proper divisors (150091).

396361289 is a wasteful number, since it uses less digits than its factorization.

396361289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150090.

The product of its digits is 419904, while the sum is 47.

The square root of 396361289 is about 19908.8244002503. The cubic root of 396361289 is about 734.5653029892.

The spelling of 396361289 in words is "three hundred ninety-six million, three hundred sixty-one thousand, two hundred eighty-nine".