490574128969 has 4 divisors (see below), whose sum is σ = 490869124096. Its totient is φ = 490279133844.

The previous prime is 490574128903. The next prime is 490574129021. The reversal of 490574128969 is 969821475094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 490574128969 - 2¹¹ = 490574126921 is a prime.

It is a super-2 number, since 2×490574128969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 490574128969.

It is not an unprimeable number, because it can be changed into a prime (490574128469) 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, 147495069 + ... + 147498394.

It is an arithmetic number, because the mean of its divisors is an integer number (122717281024).

Almost surely, 2^490574128969 is an apocalyptic number.

It is an amenable number.

490574128969 is a deficient number, since it is larger than the sum of its proper divisors (294995127).

490574128969 is a wasteful number, since it uses less digits than its factorization.

490574128969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294995126.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 490574128969 in words is "four hundred ninety billion, five hundred seventy-four million, one hundred twenty-eight thousand, nine hundred sixty-nine".