397796313 has 8 divisors (see below), whose sum is σ = 531460000. Its totient is φ = 264665088.

The previous prime is 397796299. The next prime is 397796359. The reversal of 397796313 is 313697793.

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

It is not a de Polignac number, because 397796313 - 2¹³ = 397788121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397796383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131368 + ... + 134361.

It is an arithmetic number, because the mean of its divisors is an integer number (66432500).

Almost surely, 2^397796313 is an apocalyptic number.

It is an amenable number.

397796313 is a deficient number, since it is larger than the sum of its proper divisors (133663687).

397796313 is a wasteful number, since it uses less digits than its factorization.

397796313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266231.

The product of its digits is 642978, while the sum is 48.

The square root of 397796313 is about 19944.8317365677. The cubic root of 397796313 is about 735.4507319125.

The spelling of 397796313 in words is "three hundred ninety-seven million, seven hundred ninety-six thousand, three hundred thirteen".