472729987 has 2 divisors, whose sum is σ = 472729988. Its totient is φ = 472729986.

The previous prime is 472729927. The next prime is 472729991. The reversal of 472729987 is 789927274.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 472729987 - 2²⁷ = 338512259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (472729927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236364993 + 236364994.

It is an arithmetic number, because the mean of its divisors is an integer number (236364994).

Almost surely, 2^472729987 is an apocalyptic number.

472729987 is a deficient number, since it is larger than the sum of its proper divisors (1).

472729987 is an equidigital number, since it uses as much as digits as its factorization.

472729987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 55.

The square root of 472729987 is about 21742.3546792890. The cubic root of 472729987 is about 779.0004657999. Note that the first 3 decimals are identical.

The spelling of 472729987 in words is "four hundred seventy-two million, seven hundred twenty-nine thousand, nine hundred eighty-seven".