4280206649 has 4 divisors (see below), whose sum is σ = 4334386560. Its totient is φ = 4226026740.

The previous prime is 4280206607. The next prime is 4280206661. The reversal of 4280206649 is 9466020824.

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 a de Polignac number, because none of the positive numbers 2^k-4280206649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4280206699) 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, 27089837 + ... + 27089994.

It is an arithmetic number, because the mean of its divisors is an integer number (1083596640).

Almost surely, 2^4280206649 is an apocalyptic number.

It is an amenable number.

4280206649 is a deficient number, since it is larger than the sum of its proper divisors (54179911).

4280206649 is an equidigital number, since it uses as much as digits as its factorization.

4280206649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54179910.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 4280206649 is about 65423.2882771877. The cubic root of 4280206649 is about 1623.6344060489.

The spelling of 4280206649 in words is "four billion, two hundred eighty million, two hundred six thousand, six hundred forty-nine".