490873787 has 4 divisors (see below), whose sum is σ = 490918560. Its totient is φ = 490829016.

The previous prime is 490873777. The next prime is 490873879. The reversal of 490873787 is 787378094.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490873787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490873727) 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, 6389 + ... + 31977.

It is an arithmetic number, because the mean of its divisors is an integer number (122729640).

Almost surely, 2^490873787 is an apocalyptic number.

490873787 is a deficient number, since it is larger than the sum of its proper divisors (44773).

490873787 is a wasteful number, since it uses less digits than its factorization.

490873787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44772.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The square root of 490873787 is about 22155.6716666410. The cubic root of 490873787 is about 788.8418574407.

The spelling of 490873787 in words is "four hundred ninety million, eight hundred seventy-three thousand, seven hundred eighty-seven".