487991774 has 4 divisors (see below), whose sum is σ = 731987664. Its totient is φ = 243995886.

The previous prime is 487991767. The next prime is 487991809. The reversal of 487991774 is 477199784.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121997942 + ... + 121997945.

It is an arithmetic number, because the mean of its divisors is an integer number (182996916).

Almost surely, 2^487991774 is an apocalyptic number.

487991774 is a deficient number, since it is larger than the sum of its proper divisors (243995890).

487991774 is a wasteful number, since it uses less digits than its factorization.

487991774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243995889.

The product of its digits is 3556224, while the sum is 56.

The square root of 487991774 is about 22090.5358468282. The cubic root of 487991774 is about 787.2950128762.

The spelling of 487991774 in words is "four hundred eighty-seven million, nine hundred ninety-one thousand, seven hundred seventy-four".