492400639 has 2 divisors, whose sum is σ = 492400640. Its totient is φ = 492400638.

The previous prime is 492400627. The next prime is 492400681. The reversal of 492400639 is 936004294.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 492400639 - 2⁷ = 492400511 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 492400598 and 492400607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492400619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246200319 + 246200320.

It is an arithmetic number, because the mean of its divisors is an integer number (246200320).

Almost surely, 2^492400639 is an apocalyptic number.

492400639 is a deficient number, since it is larger than the sum of its proper divisors (1).

492400639 is an equidigital number, since it uses as much as digits as its factorization.

492400639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 492400639 is about 22190.1022755642. The cubic root of 492400639 is about 789.6589025777.

It can be divided in two parts, 492400 and 639, that added together give a cube (493039 = 79³).

The spelling of 492400639 in words is "four hundred ninety-two million, four hundred thousand, six hundred thirty-nine".