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397489 is a prime number
BaseRepresentation
bin1100001000010110001
3202012020211
41201002301
5100204424
612304121
73243601
oct1410261
9665224
10397489
11251704
12172041
1310bc01
14a4c01
157cb94
hex610b1

397489 has 2 divisors, whose sum is σ = 397490. Its totient is φ = 397488.

The previous prime is 397469. The next prime is 397493. The reversal of 397489 is 984793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339889 + 57600 = 583^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 397489 - 27 = 397361 is a prime.

397489 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (397429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198744 + 198745.

It is an arithmetic number, because the mean of its divisors is an integer number (198745).

2397489 is an apocalyptic number.

It is an amenable number.

397489 is a deficient number, since it is larger than the sum of its proper divisors (1).

397489 is an equidigital number, since it uses as much as digits as its factorization.

397489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 397489 is about 630.4672870181. The cubic root of 397489 is about 73.5261295100.

The spelling of 397489 in words is "three hundred ninety-seven thousand, four hundred eighty-nine".