427538987 has 2 divisors, whose sum is σ = 427538988. Its totient is φ = 427538986.

The previous prime is 427538983. The next prime is 427538999. The reversal of 427538987 is 789835724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427538987 - 2² = 427538983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427538983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213769493 + 213769494.

It is an arithmetic number, because the mean of its divisors is an integer number (213769494).

Almost surely, 2^427538987 is an apocalyptic number.

427538987 is a deficient number, since it is larger than the sum of its proper divisors (1).

427538987 is an equidigital number, since it uses as much as digits as its factorization.

427538987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 53.

The square root of 427538987 is about 20677.0159113930. The cubic root of 427538987 is about 753.3415268946.

The spelling of 427538987 in words is "four hundred twenty-seven million, five hundred thirty-eight thousand, nine hundred eighty-seven".