398032249255 has 4 divisors (see below), whose sum is σ = 477638699112. Its totient is φ = 318425799400.

The previous prime is 398032249253. The next prime is 398032249261. The reversal of 398032249255 is 552942230893.

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

It is not a de Polignac number, because 398032249255 - 2¹ = 398032249253 is a prime.

It is a super-3 number, since 3×398032249255³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398032249253) 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, 39803224921 + ... + 39803224930.

It is an arithmetic number, because the mean of its divisors is an integer number (119409674778).

Almost surely, 2^398032249255 is an apocalyptic number.

398032249255 is a deficient number, since it is larger than the sum of its proper divisors (79606449857).

398032249255 is an equidigital number, since it uses as much as digits as its factorization.

398032249255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79606449856.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 398032249255 in words is "three hundred ninety-eight billion, thirty-two million, two hundred forty-nine thousand, two hundred fifty-five".