397619 has 4 divisors (see below), whose sum is σ = 411360. Its totient is φ = 383880.

The previous prime is 397597. The next prime is 397633. The reversal of 397619 is 916793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397619 is a prime.

It is a super-2 number, since 2×397619² = 316201738322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397519) 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, 6827 + ... + 6884.

It is an arithmetic number, because the mean of its divisors is an integer number (102840).

2³⁹⁷⁶¹⁹ is an apocalyptic number.

397619 is a deficient number, since it is larger than the sum of its proper divisors (13741).

397619 is a wasteful number, since it uses less digits than its factorization.

397619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13740.

The product of its digits is 10206, while the sum is 35.

The square root of 397619 is about 630.5703767225. The cubic root of 397619 is about 73.5341442852.

The spelling of 397619 in words is "three hundred ninety-seven thousand, six hundred nineteen".