397141321 has 4 divisors (see below), whose sum is σ = 397321092. Its totient is φ = 396961552.

The previous prime is 397141289. The next prime is 397141333. The reversal of 397141321 is 123141793.

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 347636025 + 49505296 = 18645^2 + 7036^2 .

It is a cyclic number.

It is not a de Polignac number, because 397141321 - 2⁵ = 397141289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397141351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86530 + ... + 91003.

It is an arithmetic number, because the mean of its divisors is an integer number (99330273).

Almost surely, 2^397141321 is an apocalyptic number.

It is an amenable number.

397141321 is a deficient number, since it is larger than the sum of its proper divisors (179771).

397141321 is a wasteful number, since it uses less digits than its factorization.

397141321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179770.

The product of its digits is 4536, while the sum is 31.

The square root of 397141321 is about 19928.4048784643. The cubic root of 397141321 is about 735.0468577343.

The spelling of 397141321 in words is "three hundred ninety-seven million, one hundred forty-one thousand, three hundred twenty-one".