397117673 has 4 divisors (see below), whose sum is σ = 397914000. Its totient is φ = 396321348.

The previous prime is 397117667. The next prime is 397117687. The reversal of 397117673 is 376711793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 376711793 = 5953 ⋅63281.

It is a cyclic number.

It is not a de Polignac number, because 397117673 - 2⁸ = 397117417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397117873) 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, 397415 + ... + 398412.

It is an arithmetic number, because the mean of its divisors is an integer number (99478500).

Almost surely, 2^397117673 is an apocalyptic number.

It is an amenable number.

397117673 is a deficient number, since it is larger than the sum of its proper divisors (796327).

397117673 is an equidigital number, since it uses as much as digits as its factorization.

397117673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796326.

The product of its digits is 166698, while the sum is 44.

The square root of 397117673 is about 19927.8115456766. The cubic root of 397117673 is about 735.0322678539.

The spelling of 397117673 in words is "three hundred ninety-seven million, one hundred seventeen thousand, six hundred seventy-three".