397434361 has 4 divisors (see below), whose sum is σ = 407127924. Its totient is φ = 387740800.

The previous prime is 397434341. The next prime is 397434371. The reversal of 397434361 is 163434793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163434793 = 1009 ⋅161977.

It can be written as a sum of positive squares in 2 ways, for example, as 205750336 + 191684025 = 14344^2 + 13845^2 .

It is a cyclic number.

It is not a de Polignac number, because 397434361 - 2¹¹ = 397432313 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397434341) 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, 4846720 + ... + 4846801.

It is an arithmetic number, because the mean of its divisors is an integer number (101781981).

Almost surely, 2^397434361 is an apocalyptic number.

It is an amenable number.

397434361 is a deficient number, since it is larger than the sum of its proper divisors (9693563).

397434361 is an equidigital number, since it uses as much as digits as its factorization.

397434361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9693562.

The product of its digits is 163296, while the sum is 40.

The square root of 397434361 is about 19935.7558422047. The cubic root of 397434361 is about 735.2276037833.

The spelling of 397434361 in words is "three hundred ninety-seven million, four hundred thirty-four thousand, three hundred sixty-one".