398352427577 has 8 divisors (see below), whose sum is σ = 431172563976. Its totient is φ = 365843382912.

The previous prime is 398352427513. The next prime is 398352427679. The reversal of 398352427577 is 775724253893.

It can be written as a sum of positive squares in 4 ways, for example, as 240664811776 + 157687615801 = 490576^2 + 397099^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 398352427577 - 2⁶ = 398352427513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398352427177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77770268 + ... + 77775389.

It is an arithmetic number, because the mean of its divisors is an integer number (53896570497).

Almost surely, 2^398352427577 is an apocalyptic number.

It is an amenable number.

398352427577 is a deficient number, since it is larger than the sum of its proper divisors (32820136399).

398352427577 is a wasteful number, since it uses less digits than its factorization.

398352427577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155545867.

The product of its digits is 88905600, while the sum is 62.

The spelling of 398352427577 in words is "three hundred ninety-eight billion, three hundred fifty-two million, four hundred twenty-seven thousand, five hundred seventy-seven".