397333905 has 8 divisors (see below), whose sum is σ = 635734272. Its totient is φ = 211911408.

The previous prime is 397333903. The next prime is 397333921. The reversal of 397333905 is 509333793.

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

It is not a de Polignac number, because 397333905 - 2¹ = 397333903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397333903) 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 7 ways as a sum of consecutive naturals, for example, 13244449 + ... + 13244478.

It is an arithmetic number, because the mean of its divisors is an integer number (79466784).

Almost surely, 2^397333905 is an apocalyptic number.

It is an amenable number.

397333905 is a deficient number, since it is larger than the sum of its proper divisors (238400367).

397333905 is a wasteful number, since it uses less digits than its factorization.

397333905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26488935.

The product of its (nonzero) digits is 229635, while the sum is 42.

The square root of 397333905 is about 19933.2361898413. The cubic root of 397333905 is about 735.1656528843.

The spelling of 397333905 in words is "three hundred ninety-seven million, three hundred thirty-three thousand, nine hundred five".