490023871 has 4 divisors (see below), whose sum is σ = 491389200. Its totient is φ = 488658544.

The previous prime is 490023869. The next prime is 490023887. The reversal of 490023871 is 178320094.

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

It is a cyclic number.

It is not a de Polignac number, because 490023871 - 2¹ = 490023869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490023811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682126 + ... + 682843.

It is an arithmetic number, because the mean of its divisors is an integer number (122847300).

Almost surely, 2^490023871 is an apocalyptic number.

490023871 is a deficient number, since it is larger than the sum of its proper divisors (1365329).

490023871 is a wasteful number, since it uses less digits than its factorization.

490023871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365328.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 490023871 is about 22136.4828055407. The cubic root of 490023871 is about 788.3863183232.

The spelling of 490023871 in words is "four hundred ninety million, twenty-three thousand, eight hundred seventy-one".