397386386 has 4 divisors (see below), whose sum is σ = 596079582. Its totient is φ = 198693192.

The previous prime is 397386347. The next prime is 397386389. The reversal of 397386386 is 683683793.

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

It can be written as a sum of positive squares in only one way, i.e., 392238025 + 5148361 = 19805^2 + 2269^2 .

It is not an unprimeable number, because it can be changed into a prime (397386389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99346595 + ... + 99346598.

Almost surely, 2^397386386 is an apocalyptic number.

397386386 is a deficient number, since it is larger than the sum of its proper divisors (198693196).

397386386 is a wasteful number, since it uses less digits than its factorization.

397386386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198693195.

The product of its digits is 3919104, while the sum is 53.

The square root of 397386386 is about 19934.5525658340. The cubic root of 397386386 is about 735.1980190543.

The spelling of 397386386 in words is "three hundred ninety-seven million, three hundred eighty-six thousand, three hundred eighty-six".