398774151 has 32 divisors (see below), whose sum is σ = 634913280. Its totient is φ = 246457728.

The previous prime is 398774149. The next prime is 398774153. The reversal of 398774151 is 151477893.

It is an interprime number because it is at equal distance from previous prime (398774149) and next prime (398774153).

It is not a de Polignac number, because 398774151 - 2¹ = 398774149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398774097 and 398774106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398774153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24270 + ... + 37236.

It is an arithmetic number, because the mean of its divisors is an integer number (19841040).

Almost surely, 2^398774151 is an apocalyptic number.

398774151 is a deficient number, since it is larger than the sum of its proper divisors (236139129).

398774151 is a wasteful number, since it uses less digits than its factorization.

398774151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060 (or 13054 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 398774151 is about 19969.3302591749. The cubic root of 398774151 is about 736.0528518039.

The spelling of 398774151 in words is "three hundred ninety-eight million, seven hundred seventy-four thousand, one hundred fifty-one".