397858662 has 16 divisors (see below), whose sum is σ = 884130480. Its totient is φ = 132619536.

The previous prime is 397858631. The next prime is 397858673. The reversal of 397858662 is 266858793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 7367753 = 397858662 / (3 + 9 + 7 + 8 + 5 + 8 + 6 + 6 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 397858599 and 397858608.

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 7 ways as a sum of consecutive naturals, for example, 3683823 + ... + 3683930.

It is an arithmetic number, because the mean of its divisors is an integer number (55258155).

Almost surely, 2^397858662 is an apocalyptic number.

397858662 is an abundant number, since it is smaller than the sum of its proper divisors (486271818).

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

397858662 is a wasteful number, since it uses less digits than its factorization.

397858662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7367764 (or 7367758 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 397858662 is about 19946.3947118270. The cubic root of 397858662 is about 735.4891537720.

The spelling of 397858662 in words is "three hundred ninety-seven million, eight hundred fifty-eight thousand, six hundred sixty-two".