398958451 has 2 divisors, whose sum is σ = 398958452. Its totient is φ = 398958450.

The previous prime is 398958407. The next prime is 398958493. The reversal of 398958451 is 154859893.

It is a strong prime.

It is an emirp because it is prime and its reverse (154859893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398958451 - 2⁷ = 398958323 is a prime.

It is not a weakly prime, because it can be changed into another prime (398958151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199479225 + 199479226.

It is an arithmetic number, because the mean of its divisors is an integer number (199479226).

Almost surely, 2^398958451 is an apocalyptic number.

398958451 is a deficient number, since it is larger than the sum of its proper divisors (1).

398958451 is an equidigital number, since it uses as much as digits as its factorization.

398958451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 52.

The square root of 398958451 is about 19973.9443025157. The cubic root of 398958451 is about 736.1662272966.

The spelling of 398958451 in words is "three hundred ninety-eight million, nine hundred fifty-eight thousand, four hundred fifty-one".