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398423 is a prime number
BaseRepresentation
bin1100001010001010111
3202020112102
41201101113
5100222143
612312315
73246404
oct1412127
9666472
10398423
11252383
1217269b
1310c46c
14a52ab
157d0b8
hex61457

398423 has 2 divisors, whose sum is σ = 398424. Its totient is φ = 398422.

The previous prime is 398417. The next prime is 398441. The reversal of 398423 is 324893.

It is a weak prime.

It is an emirp because it is prime and its reverse (324893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398423 - 24 = 398407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199211 + 199212.

It is an arithmetic number, because the mean of its divisors is an integer number (199212).

2398423 is an apocalyptic number.

398423 is a deficient number, since it is larger than the sum of its proper divisors (1).

398423 is an equidigital number, since it uses as much as digits as its factorization.

398423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 398423 is about 631.2075728316. The cubic root of 398423 is about 73.5836738165.

The spelling of 398423 in words is "three hundred ninety-eight thousand, four hundred twenty-three".