490894111 has 4 divisors (see below), whose sum is σ = 490941112. Its totient is φ = 490847112.

The previous prime is 490894097. The next prime is 490894123. The reversal of 490894111 is 111498094.

490894111 is a nontrivial binomial coefficient, being equal to C(31334, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(490894111) divides (490894111-1)³.

It is a cyclic number.

It is not a de Polignac number, because 490894111 - 2²³ = 482505503 is a prime.

It is a deceptive number, since it divides R_490894110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490894141) 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, 1 + ... + 31333.

It is an arithmetic number, because the mean of its divisors is an integer number (122735278).

Almost surely, 2^490894111 is an apocalyptic number.

490894111 is the 31333-rd triangular number and also the 15667-th hexagonal number.

490894111 is the 10445-th centered nonagonal number.

490894111 is a deficient number, since it is larger than the sum of its proper divisors (47001).

490894111 is a wasteful number, since it uses less digits than its factorization.

490894111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47000.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 490894111 is about 22156.1303254878. The cubic root of 490894111 is about 788.8527442858.

The spelling of 490894111 in words is "four hundred ninety million, eight hundred ninety-four thousand, one hundred eleven".