490197689 has 8 divisors (see below), whose sum is σ = 521163072. Its totient is φ = 460036720.

The previous prime is 490197683. The next prime is 490197691. The reversal of 490197689 is 986791094.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490197689 - 2²⁰ = 489149113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 490197689.

It is not an unprimeable number, because it can be changed into a prime (490197683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199847 + ... + 202284.

It is an arithmetic number, because the mean of its divisors is an integer number (65145384).

Almost surely, 2^490197689 is an apocalyptic number.

It is an amenable number.

490197689 is a deficient number, since it is larger than the sum of its proper divisors (30965383).

490197689 is a wasteful number, since it uses less digits than its factorization.

490197689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402207.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 490197689 is about 22140.4085102330. The cubic root of 490197689 is about 788.4795243495.

The spelling of 490197689 in words is "four hundred ninety million, one hundred ninety-seven thousand, six hundred eighty-nine".