397319145 has 16 divisors (see below), whose sum is σ = 637169280. Its totient is φ = 211417344.

The previous prime is 397319123. The next prime is 397319147. The reversal of 397319145 is 541913793.

It is not a de Polignac number, because 397319145 - 2⁵ = 397319113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397319097 and 397319106.

It is not an unprimeable number, because it can be changed into a prime (397319147) 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 15 ways as a sum of consecutive naturals, for example, 23584 + ... + 36753.

It is an arithmetic number, because the mean of its divisors is an integer number (39823080).

Almost surely, 2^397319145 is an apocalyptic number.

It is an amenable number.

397319145 is a deficient number, since it is larger than the sum of its proper divisors (239850135).

397319145 is a wasteful number, since it uses less digits than its factorization.

397319145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60784.

The product of its digits is 102060, while the sum is 42.

The square root of 397319145 is about 19932.8659504849. The cubic root of 397319145 is about 735.1565495590.

The spelling of 397319145 in words is "three hundred ninety-seven million, three hundred nineteen thousand, one hundred forty-five".