397388527806 has 48 divisors (see below), whose sum is σ = 838932885504. Its totient is φ = 125472585168.

The previous prime is 397388527759. The next prime is 397388527829. The reversal of 397388527806 is 608725883793.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29284035 + ... + 29297601.

It is an arithmetic number, because the mean of its divisors is an integer number (17477768448).

Almost surely, 2^397388527806 is an apocalyptic number.

397388527806 is an abundant number, since it is smaller than the sum of its proper divisors (441544357698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397388527806 is a wasteful number, since it uses less digits than its factorization.

397388527806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27133 (or 27114 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 66.

The spelling of 397388527806 in words is "three hundred ninety-seven billion, three hundred eighty-eight million, five hundred twenty-seven thousand, eight hundred six".