1439370539 has 2 divisors, whose sum is σ = 1439370540. Its totient is φ = 1439370538.

The previous prime is 1439370533. The next prime is 1439370551. The reversal of 1439370539 is 9350739341.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1439370539 - 2⁴ = 1439370523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1439370539.

It is not a weakly prime, because it can be changed into another prime (1439370533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719685269 + 719685270.

It is an arithmetic number, because the mean of its divisors is an integer number (719685270).

Almost surely, 2^1439370539 is an apocalyptic number.

1439370539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439370539 is an equidigital number, since it uses as much as digits as its factorization.

1439370539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 44.

The square root of 1439370539 is about 37939.0371385464. The cubic root of 1439370539 is about 1129.0786702654.

The spelling of 1439370539 in words is "one billion, four hundred thirty-nine million, three hundred seventy thousand, five hundred thirty-nine".