1477216987 has 2 divisors, whose sum is σ = 1477216988. Its totient is φ = 1477216986.

The previous prime is 1477216981. The next prime is 1477217029. The reversal of 1477216987 is 7896127741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1477216987 - 2⁷ = 1477216859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1477216981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 738608493 + 738608494.

It is an arithmetic number, because the mean of its divisors is an integer number (738608494).

Almost surely, 2^1477216987 is an apocalyptic number.

1477216987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1477216987 is an equidigital number, since it uses as much as digits as its factorization.

1477216987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 52.

The square root of 1477216987 is about 38434.5806143374. The cubic root of 1477216987 is about 1138.8890857815.

The spelling of 1477216987 in words is "one billion, four hundred seventy-seven million, two hundred sixteen thousand, nine hundred eighty-seven".