1391600887 has 2 divisors, whose sum is σ = 1391600888. Its totient is φ = 1391600886.

The previous prime is 1391600867. The next prime is 1391600891. The reversal of 1391600887 is 7880061931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1391600887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1391600827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695800443 + 695800444.

It is an arithmetic number, because the mean of its divisors is an integer number (695800444).

Almost surely, 2^1391600887 is an apocalyptic number.

1391600887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391600887 is an equidigital number, since it uses as much as digits as its factorization.

1391600887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1391600887 is about 37304.1671532820. The cubic root of 1391600887 is about 1116.4473116719.

The spelling of 1391600887 in words is "one billion, three hundred ninety-one million, six hundred thousand, eight hundred eighty-seven".