397483686 has 160 divisors (see below), whose sum is σ = 999266400. Its totient is φ = 117573120.

The previous prime is 397483663. The next prime is 397483733. The reversal of 397483686 is 686384793.

It is a super-2 number, since 2×397483686² = 315986561272293192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 79 ways as a sum of consecutive naturals, for example, 5444946 + ... + 5445018.

It is an arithmetic number, because the mean of its divisors is an integer number (6245415).

Almost surely, 2^397483686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397483686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499633200).

397483686 is an abundant number, since it is smaller than the sum of its proper divisors (601782714).

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

397483686 is a wasteful number, since it uses less digits than its factorization.

397483686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 187 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 397483686 is about 19936.9929026421. The cubic root of 397483686 is about 735.2580185343.

It can be divided in two parts, 39748 and 3686, that added together give a palindrome (43434).

The spelling of 397483686 in words is "three hundred ninety-seven million, four hundred eighty-three thousand, six hundred eighty-six".