2213455729 has 4 divisors (see below), whose sum is σ = 2227035376. Its totient is φ = 2199876084.

The previous prime is 2213455693. The next prime is 2213455753. The reversal of 2213455729 is 9275543122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9275543122 = 2 ⋅4637771561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2213455729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2213455691 and 2213455700.

It is not an unprimeable number, because it can be changed into a prime (2213455759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6789579 + ... + 6789904.

It is an arithmetic number, because the mean of its divisors is an integer number (556758844).

Almost surely, 2^2213455729 is an apocalyptic number.

It is an amenable number.

2213455729 is a deficient number, since it is larger than the sum of its proper divisors (13579647).

2213455729 is a wasteful number, since it uses less digits than its factorization.

2213455729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13579646.

The product of its digits is 151200, while the sum is 40.

The square root of 2213455729 is about 47047.3774933311. The cubic root of 2213455729 is about 1303.2376359261.

The spelling of 2213455729 in words is "two billion, two hundred thirteen million, four hundred fifty-five thousand, seven hundred twenty-nine".