1300440139 has 2 divisors, whose sum is σ = 1300440140. Its totient is φ = 1300440138.

The previous prime is 1300440137. The next prime is 1300440149. The reversal of 1300440139 is 9310440031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1300440139 - 2¹ = 1300440137 is a prime.

It is a super-2 number, since 2×1300440139² = 3382289110244678642, which contains 22 as substring.

Together with 1300440137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1300440131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650220069 + 650220070.

It is an arithmetic number, because the mean of its divisors is an integer number (650220070).

Almost surely, 2^1300440139 is an apocalyptic number.

1300440139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300440139 is an equidigital number, since it uses as much as digits as its factorization.

1300440139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1300440139 is about 36061.6158678449. The cubic root of 1300440139 is about 1091.5160395663.

The spelling of 1300440139 in words is "one billion, three hundred million, four hundred forty thousand, one hundred thirty-nine".