398147311 has 2 divisors, whose sum is σ = 398147312. Its totient is φ = 398147310.

The previous prime is 398147303. The next prime is 398147333. The reversal of 398147311 is 113741893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398147311 - 2³ = 398147303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398144311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199073655 + 199073656.

It is an arithmetic number, because the mean of its divisors is an integer number (199073656).

Almost surely, 2^398147311 is an apocalyptic number.

398147311 is a deficient number, since it is larger than the sum of its proper divisors (1).

398147311 is an equidigital number, since it uses as much as digits as its factorization.

398147311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 398147311 is about 19953.6290183014. The cubic root of 398147311 is about 735.6669781340. Note that the first 3 decimals are identical.

The spelling of 398147311 in words is "three hundred ninety-eight million, one hundred forty-seven thousand, three hundred eleven".