Search a number
-
+
399379 is a prime number
BaseRepresentation
bin1100001100000010011
3202021211211
41201200103
5100240004
612320551
73252241
oct1414023
9667754
10399379
11253072
12173157
1310ca26
14a5791
157d504
hex61813

399379 has 2 divisors, whose sum is σ = 399380. Its totient is φ = 399378.

The previous prime is 399353. The next prime is 399389. The reversal of 399379 is 973993.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-399379 is a prime.

It is not a weakly prime, because it can be changed into another prime (399389) 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, 199689 + 199690.

It is an arithmetic number, because the mean of its divisors is an integer number (199690).

2399379 is an apocalyptic number.

399379 is a deficient number, since it is larger than the sum of its proper divisors (1).

399379 is an equidigital number, since it uses as much as digits as its factorization.

399379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45927, while the sum is 40.

The square root of 399379 is about 631.9643977314. The cubic root of 399379 is about 73.6424804976.

The spelling of 399379 in words is "three hundred ninety-nine thousand, three hundred seventy-nine".