1247058887 has 2 divisors, whose sum is σ = 1247058888. Its totient is φ = 1247058886.

The previous prime is 1247058871. The next prime is 1247058893. The reversal of 1247058887 is 7888507421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1247058887 - 2⁴ = 1247058871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247058487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623529443 + 623529444.

It is an arithmetic number, because the mean of its divisors is an integer number (623529444).

Almost surely, 2^1247058887 is an apocalyptic number.

1247058887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247058887 is an equidigital number, since it uses as much as digits as its factorization.

1247058887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1003520, while the sum is 50.

The square root of 1247058887 is about 35313.7209452643. The cubic root of 1247058887 is about 1076.3718234123.

The spelling of 1247058887 in words is "one billion, two hundred forty-seven million, fifty-eight thousand, eight hundred eighty-seven".