1339931 has 2 divisors, whose sum is σ = 1339932. Its totient is φ = 1339930.

The previous prime is 1339909. The next prime is 1339951. The reversal of 1339931 is 1399331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1339931 - 2¹⁰ = 1338907 is a prime.

It is a super-2 number, since 2×1339931² = 3590830169522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1339894 and 1339903.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669965 + 669966.

It is an arithmetic number, because the mean of its divisors is an integer number (669966).

2^1339931 is an apocalyptic number.

1339931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339931 is an equidigital number, since it uses as much as digits as its factorization.

1339931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2187, while the sum is 29.

The square root of 1339931 is about 1157.5538864347. The cubic root of 1339931 is about 110.2454848068.

The spelling of 1339931 in words is "one million, three hundred thirty-nine thousand, nine hundred thirty-one".