497378169 has 6 divisors (see below), whose sum is σ = 718435146. Its totient is φ = 331585440.

The previous prime is 497378131. The next prime is 497378179. The reversal of 497378169 is 961873794.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 262828944 + 234549225 = 16212^2 + 15315^2 .

It is a de Polignac number, because none of the positive numbers 2^k-497378169 is a prime.

It is a super-2 number, since 2×497378169² = 494770085995585122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (497378179) 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 5 ways as a sum of consecutive naturals, for example, 27632112 + ... + 27632129.

It is an arithmetic number, because the mean of its divisors is an integer number (119739191).

Almost surely, 2^497378169 is an apocalyptic number.

It is an amenable number.

497378169 is a deficient number, since it is larger than the sum of its proper divisors (221056977).

497378169 is a wasteful number, since it uses less digits than its factorization.

497378169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55264247 (or 55264244 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 497378169 is about 22301.9767957910. The cubic root of 497378169 is about 792.3107949570.

The spelling of 497378169 in words is "four hundred ninety-seven million, three hundred seventy-eight thousand, one hundred sixty-nine".