397284346 has 4 divisors (see below), whose sum is σ = 595926522. Its totient is φ = 198642172.

The previous prime is 397284337. The next prime is 397284389. The reversal of 397284346 is 643482793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643482793 = 17 ⋅37851929.

It can be written as a sum of positive squares in only one way, i.e., 385690321 + 11594025 = 19639^2 + 3405^2 .

It is a junction number, because it is equal to n+sod(n) for n = 397284296 and 397284305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99321085 + ... + 99321088.

Almost surely, 2^397284346 is an apocalyptic number.

397284346 is a deficient number, since it is larger than the sum of its proper divisors (198642176).

397284346 is a wasteful number, since it uses less digits than its factorization.

397284346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198642175.

The product of its digits is 870912, while the sum is 46.

The square root of 397284346 is about 19931.9930262882. The cubic root of 397284346 is about 735.1350861586.

The spelling of 397284346 in words is "three hundred ninety-seven million, two hundred eighty-four thousand, three hundred forty-six".