398923735297 has 4 divisors (see below), whose sum is σ = 398926685700. Its totient is φ = 398920784896.

The previous prime is 398923735283. The next prime is 398923735307. The reversal of 398923735297 is 792537329893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 174850258801 + 224073476496 = 418151^2 + 473364^2 .

It is a cyclic number.

It is not a de Polignac number, because 398923735297 - 2⁷ = 398923735169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398923739297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262128 + ... + 1546225.

It is an arithmetic number, because the mean of its divisors is an integer number (99731671425).

Almost surely, 2^398923735297 is an apocalyptic number.

It is an amenable number.

398923735297 is a deficient number, since it is larger than the sum of its proper divisors (2950403).

398923735297 is a wasteful number, since it uses less digits than its factorization.

398923735297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950402.

The product of its digits is 154314720, while the sum is 67.

The spelling of 398923735297 in words is "three hundred ninety-eight billion, nine hundred twenty-three million, seven hundred thirty-five thousand, two hundred ninety-seven".