4229287661 has 4 divisors (see below), whose sum is σ = 4327643232. Its totient is φ = 4130932092.

The previous prime is 4229287651. The next prime is 4229287687. The reversal of 4229287661 is 1667829224.

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.

It is a cyclic number.

It is not a de Polignac number, because 4229287661 - 2²² = 4225093357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4229287651) 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, 49177721 + ... + 49177806.

It is an arithmetic number, because the mean of its divisors is an integer number (1081910808).

Almost surely, 2^4229287661 is an apocalyptic number.

It is an amenable number.

4229287661 is a deficient number, since it is larger than the sum of its proper divisors (98355571).

4229287661 is an equidigital number, since it uses as much as digits as its factorization.

4229287661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98355570.

The product of its digits is 580608, while the sum is 47.

The square root of 4229287661 is about 65032.9736441446. The cubic root of 4229287661 is about 1617.1702442621.

The spelling of 4229287661 in words is "four billion, two hundred twenty-nine million, two hundred eighty-seven thousand, six hundred sixty-one".