492778497 has 8 divisors (see below), whose sum is σ = 657439744. Its totient is φ = 328318128.

The previous prime is 492778477. The next prime is 492778499. The reversal of 492778497 is 794877294.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 492778497 - 2¹⁰ = 492777473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492778499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44398 + ... + 54375.

It is an arithmetic number, because the mean of its divisors is an integer number (82179968).

Almost surely, 2^492778497 is an apocalyptic number.

It is an amenable number.

492778497 is a deficient number, since it is larger than the sum of its proper divisors (164661247).

492778497 is a wasteful number, since it uses less digits than its factorization.

492778497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100439.

The product of its digits is 7112448, while the sum is 57.

The square root of 492778497 is about 22198.6147540787. The cubic root of 492778497 is about 789.8608402001.

The spelling of 492778497 in words is "four hundred ninety-two million, seven hundred seventy-eight thousand, four hundred ninety-seven".