497802409 has 16 divisors (see below), whose sum is σ = 560310912. Its totient is φ = 438818688.

The previous prime is 497802407. The next prime is 497802421. The reversal of 497802409 is 904208794.

It is a cyclic number.

It is not a de Polignac number, because 497802409 - 2¹ = 497802407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (497802407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284074 + ... + 285820.

It is an arithmetic number, because the mean of its divisors is an integer number (35019432).

Almost surely, 2^497802409 is an apocalyptic number.

It is an amenable number.

497802409 is a deficient number, since it is larger than the sum of its proper divisors (62508503).

497802409 is a wasteful number, since it uses less digits than its factorization.

497802409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 497802409 is about 22311.4860329831. The cubic root of 497802409 is about 792.5359987893.

The spelling of 497802409 in words is "four hundred ninety-seven million, eight hundred two thousand, four hundred nine".