1339523 has 2 divisors, whose sum is σ = 1339524. Its totient is φ = 1339522.

The previous prime is 1339487. The next prime is 1339529. The reversal of 1339523 is 3259331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1339523 - 2¹⁰ = 1338499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1339492 and 1339501.

It is not a weakly prime, because it can be changed into another prime (1339529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669761 + 669762.

It is an arithmetic number, because the mean of its divisors is an integer number (669762).

2^1339523 is an apocalyptic number.

1339523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339523 is an equidigital number, since it uses as much as digits as its factorization.

1339523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 26.

The square root of 1339523 is about 1157.3776393209. The cubic root of 1339523 is about 110.2342940007.

It can be divided in two parts, 133952 and 3, that multiplied together give a triangular number (401856 = T₈₉₆).

The spelling of 1339523 in words is "one million, three hundred thirty-nine thousand, five hundred twenty-three".