427529385 has 24 divisors (see below), whose sum is σ = 742162824. Its totient is φ = 227673600.

The previous prime is 427529383. The next prime is 427529407. The reversal of 427529385 is 583925724.

427529385 is a `hidden beast` number, since 42 + 7 + 529 + 3 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 166642281 + 260887104 = 12909^2 + 16152^2 .

It is not a de Polignac number, because 427529385 - 2¹ = 427529383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 427529385.

It is not an unprimeable number, because it can be changed into a prime (427529383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24769 + ... + 38321.

It is an arithmetic number, because the mean of its divisors is an integer number (30923451).

Almost surely, 2^427529385 is an apocalyptic number.

427529385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

427529385 is a deficient number, since it is larger than the sum of its proper divisors (314633439).

427529385 is a wasteful number, since it uses less digits than its factorization.

427529385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14265 (or 14262 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 427529385 is about 20676.7837199116. The cubic root of 427529385 is about 753.3358871443.

The spelling of 427529385 in words is "four hundred twenty-seven million, five hundred twenty-nine thousand, three hundred eighty-five".