1399550587 has 2 divisors, whose sum is σ = 1399550588. Its totient is φ = 1399550586.

The previous prime is 1399550573. The next prime is 1399550599. The reversal of 1399550587 is 7850559931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1399550587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1399553587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699775293 + 699775294.

It is an arithmetic number, because the mean of its divisors is an integer number (699775294).

Almost surely, 2^1399550587 is an apocalyptic number.

1399550587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399550587 is an equidigital number, since it uses as much as digits as its factorization.

1399550587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701000, while the sum is 52.

The square root of 1399550587 is about 37410.5678518784. The cubic root of 1399550587 is about 1118.5692260911.

The spelling of 1399550587 in words is "one billion, three hundred ninety-nine million, five hundred fifty thousand, five hundred eighty-seven".