4006445777 has 8 divisors (see below), whose sum is σ = 4242739176. Its totient is φ = 3770221312.

The previous prime is 4006445741. The next prime is 4006445783. The reversal of 4006445777 is 7775446004.

It can be written as a sum of positive squares in 4 ways, for example, as 2495102401 + 1511343376 = 49951^2 + 38876^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4006445777 - 2⁶ = 4006445713 is a prime.

It is a super-2 number, since 2×4006445777² = 32103215528082267458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4006445717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147503 + ... + 172539.

It is an arithmetic number, because the mean of its divisors is an integer number (530342397).

Almost surely, 2^4006445777 is an apocalyptic number.

It is an amenable number.

4006445777 is a deficient number, since it is larger than the sum of its proper divisors (236293399).

4006445777 is a wasteful number, since it uses less digits than its factorization.

4006445777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34467.

The product of its (nonzero) digits is 658560, while the sum is 44.

The square root of 4006445777 is about 63296.4910322839. The cubic root of 4006445777 is about 1588.2532638006.

The spelling of 4006445777 in words is "four billion, six million, four hundred forty-five thousand, seven hundred seventy-seven".