397278106 has 8 divisors (see below), whose sum is σ = 627281280. Its totient is φ = 188184348.

The previous prime is 397278061. The next prime is 397278127. The reversal of 397278106 is 601872793.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5227306 + ... + 5227381.

It is an arithmetic number, because the mean of its divisors is an integer number (78410160).

Almost surely, 2^397278106 is an apocalyptic number.

397278106 is a deficient number, since it is larger than the sum of its proper divisors (230003174).

397278106 is a wasteful number, since it uses less digits than its factorization.

397278106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10454708.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 397278106 is about 19931.8364934092. The cubic root of 397278106 is about 735.1312373058.

The spelling of 397278106 in words is "three hundred ninety-seven million, two hundred seventy-eight thousand, one hundred six".