398634867071 has 24 divisors (see below), whose sum is σ = 472912028160. Its totient is φ = 329151092256.

The previous prime is 398634867047. The next prime is 398634867079. The reversal of 398634867071 is 170768436893.

It is not a de Polignac number, because 398634867071 - 2³⁴ = 381454997887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398634866995 and 398634867013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398634867079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2507270 + ... + 2661516.

It is an arithmetic number, because the mean of its divisors is an integer number (19704667840).

Almost surely, 2^398634867071 is an apocalyptic number.

398634867071 is a deficient number, since it is larger than the sum of its proper divisors (74277161089).

398634867071 is a wasteful number, since it uses less digits than its factorization.

398634867071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154751 (or 154722 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 398634867071 in words is "three hundred ninety-eight billion, six hundred thirty-four million, eight hundred sixty-seven thousand, seventy-one".