424000729 has 2 divisors, whose sum is σ = 424000730. Its totient is φ = 424000728.

The previous prime is 424000697. The next prime is 424000781. The reversal of 424000729 is 927000424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340771600 + 83229129 = 18460^2 + 9123^2 .

It is a cyclic number.

It is not a de Polignac number, because 424000729 - 2⁵ = 424000697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 424000697 and 424000706.

It is not a weakly prime, because it can be changed into another prime (424000429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212000364 + 212000365.

It is an arithmetic number, because the mean of its divisors is an integer number (212000365).

Almost surely, 2^424000729 is an apocalyptic number.

It is an amenable number.

424000729 is a deficient number, since it is larger than the sum of its proper divisors (1).

424000729 is an equidigital number, since it uses as much as digits as its factorization.

424000729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 424000729 is about 20591.2779836512. The cubic root of 424000729 is about 751.2575813994.

The spelling of 424000729 in words is "four hundred twenty-four million, seven hundred twenty-nine", and thus it is an aban number.