397487806 has 8 divisors (see below), whose sum is σ = 597951000. Its totient is φ = 198170808.

The previous prime is 397487767. The next prime is 397487813. The reversal of 397487806 is 608784793.

It is a happy number.

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

It is a congruent number.

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, 285681 + ... + 287068.

It is an arithmetic number, because the mean of its divisors is an integer number (74743875).

Almost surely, 2^397487806 is an apocalyptic number.

397487806 is a deficient number, since it is larger than the sum of its proper divisors (200463194).

397487806 is a wasteful number, since it uses less digits than its factorization.

397487806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573098.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 397487806 is about 19937.0962278863. The cubic root of 397487806 is about 735.2605588923.

The spelling of 397487806 in words is "three hundred ninety-seven million, four hundred eighty-seven thousand, eight hundred six".