397886170 has 16 divisors (see below), whose sum is σ = 781303968. Its totient is φ = 144685840.

The previous prime is 397886149. The next prime is 397886179. The reversal of 397886170 is 71688793.

It is a super-3 number, since 3×397886170³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (397886179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808464 + ... + 1808683.

It is an arithmetic number, because the mean of its divisors is an integer number (48831498).

Almost surely, 2^397886170 is an apocalyptic number.

397886170 is a deficient number, since it is larger than the sum of its proper divisors (383417798).

397886170 is a wasteful number, since it uses less digits than its factorization.

397886170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617165.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 397886170 is about 19947.0842480800. The cubic root of 397886170 is about 735.5061039869.

The spelling of 397886170 in words is "three hundred ninety-seven million, eight hundred eighty-six thousand, one hundred seventy".