Search a number
-
+
139837 is a prime number
BaseRepresentation
bin100010001000111101
321002211011
4202020331
513433322
62555221
71121455
oct421075
9232734
10139837
1196075
1268b11
134b859
1438d65
152b677
hex2223d

139837 has 2 divisors, whose sum is σ = 139838. Its totient is φ = 139836.

The previous prime is 139831. The next prime is 139861. The reversal of 139837 is 738931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109561 + 30276 = 331^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 139837 - 27 = 139709 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 139799 and 139808.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139837.

It is not a weakly prime, because it can be changed into another prime (139831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69918 + 69919.

It is an arithmetic number, because the mean of its divisors is an integer number (69919).

2139837 is an apocalyptic number.

It is an amenable number.

139837 is a deficient number, since it is larger than the sum of its proper divisors (1).

139837 is an equidigital number, since it uses as much as digits as its factorization.

139837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 139837 is about 373.9478573277. The cubic root of 139837 is about 51.9047813703.

The spelling of 139837 in words is "one hundred thirty-nine thousand, eight hundred thirty-seven".