470491990 has 16 divisors (see below), whose sum is σ = 848730960. Its totient is φ = 187786720.

The previous prime is 470491961. The next prime is 470491993. The reversal of 470491990 is 99194074.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (470491993) 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 in 7 ways as a sum of consecutive naturals, for example, 46420 + ... + 55639.

It is an arithmetic number, because the mean of its divisors is an integer number (53045685).

Almost surely, 2^470491990 is an apocalyptic number.

470491990 is a deficient number, since it is larger than the sum of its proper divisors (378238970).

470491990 is a wasteful number, since it uses less digits than its factorization.

470491990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102527.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 470491990 is about 21690.8273240096. The cubic root of 470491990 is about 777.7692067914.

The spelling of 470491990 in words is "four hundred seventy million, four hundred ninety-one thousand, nine hundred ninety".