398011 has 2 divisors, whose sum is σ = 398012. Its totient is φ = 398010.

The previous prime is 397981. The next prime is 398023. The reversal of 398011 is 110893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398011 - 2¹³ = 389819 is a prime.

It is a super-2 number, since 2×398011² = 316825512242, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (398311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199005 + 199006.

It is an arithmetic number, because the mean of its divisors is an integer number (199006).

2³⁹⁸⁰¹¹ is an apocalyptic number.

398011 is a deficient number, since it is larger than the sum of its proper divisors (1).

398011 is an equidigital number, since it uses as much as digits as its factorization.

398011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 398011 is about 630.8811298494. The cubic root of 398011 is about 73.5583013443.

The spelling of 398011 in words is "three hundred ninety-eight thousand, eleven".