139807240487 has 2 divisors, whose sum is σ = 139807240488. Its totient is φ = 139807240486.

The previous prime is 139807240399. The next prime is 139807240493. The reversal of 139807240487 is 784042708931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139807240487 - 2¹⁸ = 139806978343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139807240087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69903620243 + 69903620244.

It is an arithmetic number, because the mean of its divisors is an integer number (69903620244).

Almost surely, 2^139807240487 is an apocalyptic number.

139807240487 is a deficient number, since it is larger than the sum of its proper divisors (1).

139807240487 is an equidigital number, since it uses as much as digits as its factorization.

139807240487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 139807240487 in words is "one hundred thirty-nine billion, eight hundred seven million, two hundred forty thousand, four hundred eighty-seven".