490236479 has 4 divisors (see below), whose sum is σ = 490374120. Its totient is φ = 490098840.

The previous prime is 490236473. The next prime is 490236491. The reversal of 490236479 is 974632094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490236479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490236473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63332 + ... + 70649.

It is an arithmetic number, because the mean of its divisors is an integer number (122593530).

Almost surely, 2^490236479 is an apocalyptic number.

490236479 is a deficient number, since it is larger than the sum of its proper divisors (137641).

490236479 is a wasteful number, since it uses less digits than its factorization.

490236479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137640.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 490236479 is about 22141.2844930009. The cubic root of 490236479 is about 788.5003216147.

The spelling of 490236479 in words is "four hundred ninety million, two hundred thirty-six thousand, four hundred seventy-nine".