4190729 has 2 divisors, whose sum is σ = 4190730. Its totient is φ = 4190728.

The previous prime is 4190717. The next prime is 4190759. The reversal of 4190729 is 9270914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2560000 + 1630729 = 1600^2 + 1277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4190729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4190695 and 4190704.

It is not a weakly prime, because it can be changed into another prime (4190759) 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, 2095364 + 2095365.

It is an arithmetic number, because the mean of its divisors is an integer number (2095365).

Almost surely, 2^4190729 is an apocalyptic number.

It is an amenable number.

4190729 is a deficient number, since it is larger than the sum of its proper divisors (1).

4190729 is an equidigital number, since it uses as much as digits as its factorization.

4190729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 4190729 is about 2047.1270112038. The cubic root of 4190729 is about 161.2240620900.

The spelling of 4190729 in words is "four million, one hundred ninety thousand, seven hundred twenty-nine".