397160862849 has 63 divisors (see below), whose sum is σ = 633017968153. Its totient is φ = 249017473152.

The previous prime is 397160862841. The next prime is 397160862851. The reversal of 397160862849 is 948268061793.

The square root of 397160862849 is 630207.

It is a perfect power (a square), and thus also a powerful number.

397160862849 is a `hidden beast` number, since 397 + 160 + 8 + 6 + 2 + 84 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 271292014449 + 125868848400 = 520857^2 + 354780^2 .

It is not a de Polignac number, because 397160862849 - 2³ = 397160862841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397160862841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 289264327 + ... + 289265699.

Almost surely, 2^397160862849 is an apocalyptic number.

397160862849 is the 630207-th square number.

397160862849 is the 315104-th centered octagonal number.

It is an amenable number.

397160862849 is a deficient number, since it is larger than the sum of its proper divisors (235857105304).

397160862849 is an frugal number, since it uses more digits than its factorization.

397160862849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 397160862849 in words is "three hundred ninety-seven billion, one hundred sixty million, eight hundred sixty-two thousand, eight hundred forty-nine".