398152243 has 4 divisors (see below), whose sum is σ = 401873400. Its totient is φ = 394431088.

The previous prime is 398152231. The next prime is 398152247. The reversal of 398152243 is 342251893.

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

It is a cyclic number.

It is not a de Polignac number, because 398152243 - 2⁵ = 398152211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398152247) 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 3 ways as a sum of consecutive naturals, for example, 1860418 + ... + 1860631.

It is an arithmetic number, because the mean of its divisors is an integer number (100468350).

Almost surely, 2^398152243 is an apocalyptic number.

398152243 is a deficient number, since it is larger than the sum of its proper divisors (3721157).

398152243 is a wasteful number, since it uses less digits than its factorization.

398152243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721156.

The product of its digits is 51840, while the sum is 37.

The square root of 398152243 is about 19953.7526044601. The cubic root of 398152243 is about 735.6700157824.

The spelling of 398152243 in words is "three hundred ninety-eight million, one hundred fifty-two thousand, two hundred forty-three".