4006649771 has 2 divisors, whose sum is σ = 4006649772. Its totient is φ = 4006649770.

The previous prime is 4006649761. The next prime is 4006649791. The reversal of 4006649771 is 1779466004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4006649771 - 2⁶ = 4006649707 is a prime.

It is a super-4 number, since 4×4006649771⁴ (a number of 40 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (4006649761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2003324885 + 2003324886.

It is an arithmetic number, because the mean of its divisors is an integer number (2003324886).

Almost surely, 2^4006649771 is an apocalyptic number.

4006649771 is a deficient number, since it is larger than the sum of its proper divisors (1).

4006649771 is an equidigital number, since it uses as much as digits as its factorization.

4006649771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 4006649771 is about 63298.1024281139. The cubic root of 4006649771 is about 1588.2802194162.

The spelling of 4006649771 in words is "four billion, six million, six hundred forty-nine thousand, seven hundred seventy-one".