397748509474 has 16 divisors (see below), whose sum is σ = 608036735160. Its totient is φ = 195071535360.

The previous prime is 397748509453. The next prime is 397748509489. The reversal of 397748509474 is 474905847793.

It can be written as a sum of positive squares in 4 ways, for example, as 384989225625 + 12759283849 = 620475^2 + 112957^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70197 + ... + 894664.

Almost surely, 2^397748509474 is an apocalyptic number.

397748509474 is a deficient number, since it is larger than the sum of its proper divisors (210288225686).

397748509474 is a wasteful number, since it uses less digits than its factorization.

397748509474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968805.

The product of its (nonzero) digits is 213373440, while the sum is 67.

The spelling of 397748509474 in words is "three hundred ninety-seven billion, seven hundred forty-eight million, five hundred nine thousand, four hundred seventy-four".