398058487 has 2 divisors, whose sum is σ = 398058488. Its totient is φ = 398058486.

The previous prime is 398058467. The next prime is 398058497. The reversal of 398058487 is 784850893.

It is a strong prime.

It is an emirp because it is prime and its reverse (784850893) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398058487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398058467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199029243 + 199029244.

It is an arithmetic number, because the mean of its divisors is an integer number (199029244).

Almost surely, 2^398058487 is an apocalyptic number.

398058487 is a deficient number, since it is larger than the sum of its proper divisors (1).

398058487 is an equidigital number, since it uses as much as digits as its factorization.

398058487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 398058487 is about 19951.4031336144. The cubic root of 398058487 is about 735.6122666057.

The spelling of 398058487 in words is "three hundred ninety-eight million, fifty-eight thousand, four hundred eighty-seven".