397962242658 has 18 divisors (see below), whose sum is σ = 862257324747. Its totient is φ = 132653188740.

The previous prime is 397962242653. The next prime is 397962242707. The reversal of 397962242658 is 856242269793.

It is a happy number.

397962242658 is a `hidden beast` number, since 39 + 79 + 62 + 2 + 426 + 58 = 666.

It can be written as a sum of positive squares in only one way, i.e., 198981121329 + 198981121329 = 446073^2 + 446073^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=446073.

It is a junction number, because it is equal to n+sod(n) for n = 397962242595 and 397962242604.

It is not an unprimeable number, because it can be changed into a prime (397962242653) 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 8 ways as a sum of consecutive naturals, for example, 2602093 + ... + 2750783.

Almost surely, 2^397962242658 is an apocalyptic number.

397962242658 is an abundant number, since it is smaller than the sum of its proper divisors (464295082089).

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

397962242658 is an frugal number, since it uses more digits than its factorization.

397962242658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297390 (or 148696 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 397962242658 in words is "three hundred ninety-seven billion, nine hundred sixty-two million, two hundred forty-two thousand, six hundred fifty-eight".