398153291 has 2 divisors, whose sum is σ = 398153292. Its totient is φ = 398153290.

The previous prime is 398153269. The next prime is 398153293. The reversal of 398153291 is 192351893.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398153291 is a prime.

Together with 398153293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (398153293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199076645 + 199076646.

It is an arithmetic number, because the mean of its divisors is an integer number (199076646).

Almost surely, 2^398153291 is an apocalyptic number.

398153291 is a deficient number, since it is larger than the sum of its proper divisors (1).

398153291 is an equidigital number, since it uses as much as digits as its factorization.

398153291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 398153291 is about 19953.7788651674. The cubic root of 398153291 is about 735.6706612486.

The spelling of 398153291 in words is "three hundred ninety-eight million, one hundred fifty-three thousand, two hundred ninety-one".