398001598427 has 8 divisors (see below), whose sum is σ = 422183875536. Its totient is φ = 373904923392.

The previous prime is 398001598403. The next prime is 398001598433. The reversal of 398001598427 is 724895100893.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398001598427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398001598447) 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, 21390938 + ... + 21409535.

It is an arithmetic number, because the mean of its divisors is an integer number (52772984442).

Almost surely, 2^398001598427 is an apocalyptic number.

398001598427 is a deficient number, since it is larger than the sum of its proper divisors (24182277109).

398001598427 is a wasteful number, since it uses less digits than its factorization.

398001598427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42801037.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 398001598427 in words is "three hundred ninety-eight billion, one million, five hundred ninety-eight thousand, four hundred twenty-seven".