397880182 has 16 divisors (see below), whose sum is σ = 690716160. Its totient is φ = 168361128.

The previous prime is 397880179. The next prime is 397880183. The reversal of 397880182 is 281088793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397880183) by changing a digit.

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, 178768 + ... + 180979.

It is an arithmetic number, because the mean of its divisors is an integer number (43169760).

Almost surely, 2^397880182 is an apocalyptic number.

397880182 is a deficient number, since it is larger than the sum of its proper divisors (292835978).

397880182 is a wasteful number, since it uses less digits than its factorization.

397880182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359835.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 397880182 is about 19946.9341503901. The cubic root of 397880182 is about 735.5024142945.

The spelling of 397880182 in words is "three hundred ninety-seven million, eight hundred eighty thousand, one hundred eighty-two".