1339951 has 2 divisors, whose sum is σ = 1339952. Its totient is φ = 1339950.

The previous prime is 1339931. The next prime is 1339969. The reversal of 1339951 is 1599331.

It is a strong prime.

It is an emirp because it is prime and its reverse (1599331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1339951 - 2¹⁵ = 1307183 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1339901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669975 + 669976.

It is an arithmetic number, because the mean of its divisors is an integer number (669976).

2^1339951 is an apocalyptic number.

1339951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339951 is an equidigital number, since it uses as much as digits as its factorization.

1339951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3645, while the sum is 31.

The square root of 1339951 is about 1157.5625253091. The cubic root of 1339951 is about 110.2460333173.

The spelling of 1339951 in words is "one million, three hundred thirty-nine thousand, nine hundred fifty-one".