397814161 has 8 divisors (see below), whose sum is σ = 424292040. Its totient is φ = 371678208.

The previous prime is 397814159. The next prime is 397814173. The reversal of 397814161 is 161418793.

It can be written as a sum of positive squares in 4 ways, for example, as 79548561 + 318265600 = 8919^2 + 17840^2 .

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

It is not a de Polignac number, because 397814161 - 2¹ = 397814159 is a prime.

It is a super-2 number, since 2×397814161² = 316512213384267842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397814101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83076 + ... + 87733.

It is an arithmetic number, because the mean of its divisors is an integer number (53036505).

Almost surely, 2^397814161 is an apocalyptic number.

It is an amenable number.

397814161 is a deficient number, since it is larger than the sum of its proper divisors (26477879).

397814161 is a wasteful number, since it uses less digits than its factorization.

397814161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170963.

The product of its digits is 36288, while the sum is 40.

The square root of 397814161 is about 19945.2791657575. The cubic root of 397814161 is about 735.4617309489.

The spelling of 397814161 in words is "three hundred ninety-seven million, eight hundred fourteen thousand, one hundred sixty-one".