487624394 has 4 divisors (see below), whose sum is σ = 731436594. Its totient is φ = 243812196.

The previous prime is 487624393. The next prime is 487624409. The reversal of 487624394 is 493426784.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 305725225 + 181899169 = 17485^2 + 13487^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (487624391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121906097 + ... + 121906100.

Almost surely, 2^487624394 is an apocalyptic number.

487624394 is a deficient number, since it is larger than the sum of its proper divisors (243812200).

487624394 is a wasteful number, since it uses less digits than its factorization.

487624394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243812199.

The product of its digits is 1161216, while the sum is 47.

The square root of 487624394 is about 22082.2189555307. The cubic root of 487624394 is about 787.0973940702.

The spelling of 487624394 in words is "four hundred eighty-seven million, six hundred twenty-four thousand, three hundred ninety-four".