427408529 has 2 divisors, whose sum is σ = 427408530. Its totient is φ = 427408528.

The previous prime is 427408523. The next prime is 427408603. The reversal of 427408529 is 925804724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373532929 + 53875600 = 19327^2 + 7340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427408529 is a prime.

It is not a weakly prime, because it can be changed into another prime (427408523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213704264 + 213704265.

It is an arithmetic number, because the mean of its divisors is an integer number (213704265).

Almost surely, 2^427408529 is an apocalyptic number.

It is an amenable number.

427408529 is a deficient number, since it is larger than the sum of its proper divisors (1).

427408529 is an equidigital number, since it uses as much as digits as its factorization.

427408529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 427408529 is about 20673.8610085296. The cubic root of 427408529 is about 753.2648949540.

The spelling of 427408529 in words is "four hundred twenty-seven million, four hundred eight thousand, five hundred twenty-nine".