397900182 has 8 divisors (see below), whose sum is σ = 795800376. Its totient is φ = 132633392.

The previous prime is 397900157. The next prime is 397900201. The reversal of 397900182 is 281009793.

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

397900182 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 397900182.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 33158343 + ... + 33158354.

It is an arithmetic number, because the mean of its divisors is an integer number (99475047).

Almost surely, 2^397900182 is an apocalyptic number.

397900182 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

397900182 is a wasteful number, since it uses less digits than its factorization.

397900182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66316702.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 397900182 is about 19947.4354742659. The cubic root of 397900182 is about 735.5147377715.

The spelling of 397900182 in words is "three hundred ninety-seven million, nine hundred thousand, one hundred eighty-two".