490787453 has 4 divisors (see below), whose sum is σ = 528540348. Its totient is φ = 453034560.

The previous prime is 490787417. The next prime is 490787459. The reversal of 490787453 is 354787094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354787094 = 2 ⋅177393547.

It can be written as a sum of positive squares in 2 ways, for example, as 88303609 + 402483844 = 9397^2 + 20062^2 .

It is a cyclic number.

It is not a de Polignac number, because 490787453 - 2⁶ = 490787389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490787398 and 490787407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490787459) 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, 18876428 + ... + 18876453.

It is an arithmetic number, because the mean of its divisors is an integer number (132135087).

Almost surely, 2^490787453 is an apocalyptic number.

It is an amenable number.

490787453 is a deficient number, since it is larger than the sum of its proper divisors (37752895).

490787453 is a wasteful number, since it uses less digits than its factorization.

490787453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37752894.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 490787453 is about 22153.7232310959. The cubic root of 490787453 is about 788.7956080328.

The spelling of 490787453 in words is "four hundred ninety million, seven hundred eighty-seven thousand, four hundred fifty-three".