492559387 has 4 divisors (see below), whose sum is σ = 492955000. Its totient is φ = 492163776.

The previous prime is 492559351. The next prime is 492559393. The reversal of 492559387 is 783955294.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783955294 = 2 ⋅391977647.

It is a cyclic number.

It is not a de Polignac number, because 492559387 - 2⁷ = 492559259 is a prime.

It is a super-2 number, since 2×492559387² = 485229499443631538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492559087) 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, 195933 + ... + 198430.

It is an arithmetic number, because the mean of its divisors is an integer number (123238750).

Almost surely, 2^492559387 is an apocalyptic number.

492559387 is a deficient number, since it is larger than the sum of its proper divisors (395613).

492559387 is a wasteful number, since it uses less digits than its factorization.

492559387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395612.

The product of its digits is 2721600, while the sum is 52.

The square root of 492559387 is about 22193.6789874955. The cubic root of 492559387 is about 789.7437544188.

The spelling of 492559387 in words is "four hundred ninety-two million, five hundred fifty-nine thousand, three hundred eighty-seven".