2234390729 has 6 divisors (see below), whose sum is σ = 2335762506. Its totient is φ = 2137242800.

The previous prime is 2234390713. The next prime is 2234390731. The reversal of 2234390729 is 9270934322.

It can be written as a sum of positive squares in only one way, i.e., 2065520704 + 168870025 = 45448^2 + 12995^2 .

It is not a de Polignac number, because 2234390729 - 2⁴ = 2234390713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2234390029) 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 in 5 ways as a sum of consecutive naturals, for example, 2111372 + ... + 2112429.

It is an arithmetic number, because the mean of its divisors is an integer number (389293751).

Almost surely, 2^2234390729 is an apocalyptic number.

It is an amenable number.

2234390729 is a deficient number, since it is larger than the sum of its proper divisors (101371777).

2234390729 is an equidigital number, since it uses as much as digits as its factorization.

2234390729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223847 (or 4223824 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 2234390729 is about 47269.3423796016. The cubic root of 2234390729 is about 1307.3334506054. Note that the first 3 decimals are identical.

The spelling of 2234390729 in words is "two billion, two hundred thirty-four million, three hundred ninety thousand, seven hundred twenty-nine".