1339873 has 2 divisors, whose sum is σ = 1339874. Its totient is φ = 1339872.

The previous prime is 1339859. The next prime is 1339901. The reversal of 1339873 is 3789331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1327104 + 12769 = 1152^2 + 113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1339873 is a prime.

It is a super-2 number, since 2×1339873² = 3590519312258, which contains 22 as substring.

1339873 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1339813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669936 + 669937.

It is an arithmetic number, because the mean of its divisors is an integer number (669937).

2^1339873 is an apocalyptic number.

It is an amenable number.

1339873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339873 is an equidigital number, since it uses as much as digits as its factorization.

1339873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 1339873 is about 1157.5288333342. The cubic root of 1339873 is about 110.2438940954.

The spelling of 1339873 in words is "one million, three hundred thirty-nine thousand, eight hundred seventy-three".