398152851 has 16 divisors (see below), whose sum is σ = 535785600. Its totient is φ = 262986048.

The previous prime is 398152849. The next prime is 398152921. The reversal of 398152851 is 158251893.

It is not a de Polignac number, because 398152851 - 2¹ = 398152849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398152831) 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 15 ways as a sum of consecutive naturals, for example, 390220 + ... + 391238.

It is an arithmetic number, because the mean of its divisors is an integer number (33486600).

Almost surely, 2^398152851 is an apocalyptic number.

398152851 is a deficient number, since it is larger than the sum of its proper divisors (137632749).

398152851 is a wasteful number, since it uses less digits than its factorization.

398152851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098.

The product of its digits is 86400, while the sum is 42.

The square root of 398152851 is about 19953.7678396838. The cubic root of 398152851 is about 735.6703902515.

The spelling of 398152851 in words is "three hundred ninety-eight million, one hundred fifty-two thousand, eight hundred fifty-one".