487640329 has 4 divisors (see below), whose sum is σ = 531971280. Its totient is φ = 443309380.

The previous prime is 487640327. The next prime is 487640357. The reversal of 487640329 is 923046784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 487640329 - 2¹ = 487640327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487640327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22165459 + ... + 22165480.

It is an arithmetic number, because the mean of its divisors is an integer number (132992820).

Almost surely, 2^487640329 is an apocalyptic number.

It is an amenable number.

487640329 is a deficient number, since it is larger than the sum of its proper divisors (44330951).

487640329 is a wasteful number, since it uses less digits than its factorization.

487640329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44330950.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 487640329 is about 22082.5797632432. The cubic root of 487640329 is about 787.1059677870.

The spelling of 487640329 in words is "four hundred eighty-seven million, six hundred forty thousand, three hundred twenty-nine".