4000855477 has 2 divisors, whose sum is σ = 4000855478. Its totient is φ = 4000855476.

The previous prime is 4000855433. The next prime is 4000855571. The reversal of 4000855477 is 7745580004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3799612881 + 201242596 = 61641^2 + 14186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4000855477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000855277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000427738 + 2000427739.

It is an arithmetic number, because the mean of its divisors is an integer number (2000427739).

Almost surely, 2^4000855477 is an apocalyptic number.

It is an amenable number.

4000855477 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000855477 is an equidigital number, since it uses as much as digits as its factorization.

4000855477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 4000855477 is about 63252.3159813141. The cubic root of 4000855477 is about 1587.5142093258.

The spelling of 4000855477 in words is "four billion, eight hundred fifty-five thousand, four hundred seventy-seven".