427500389 has 2 divisors, whose sum is σ = 427500390. Its totient is φ = 427500388.

The previous prime is 427500373. The next prime is 427500407. The reversal of 427500389 is 983005724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423330625 + 4169764 = 20575^2 + 2042^2 .

It is a cyclic number.

It is not a de Polignac number, because 427500389 - 2⁴ = 427500373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427500349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213750194 + 213750195.

It is an arithmetic number, because the mean of its divisors is an integer number (213750195).

Almost surely, 2^427500389 is an apocalyptic number.

It is an amenable number.

427500389 is a deficient number, since it is larger than the sum of its proper divisors (1).

427500389 is an equidigital number, since it uses as much as digits as its factorization.

427500389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 427500389 is about 20676.0825351419. The cubic root of 427500389 is about 753.3188557838.

The spelling of 427500389 in words is "four hundred twenty-seven million, five hundred thousand, three hundred eighty-nine".