4086977778 has 192 divisors, whose sum is σ = 10325532672. Its totient is φ = 1158537600.

The previous prime is 4086977771. The next prime is 4086977789. The reversal of 4086977778 is 8777796804.

4086977778 is a `hidden beast` number, since 408 + 6 + 97 + 77 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (4086977771) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27066003 + ... + 27066153.

It is an arithmetic number, because the mean of its divisors is an integer number (53778816).

Almost surely, 2^4086977778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4086977778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5162766336).

4086977778 is an abundant number, since it is smaller than the sum of its proper divisors (6238554894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4086977778 is a wasteful number, since it uses less digits than its factorization.

4086977778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 33191424, while the sum is 63.

The square root of 4086977778 is about 63929.4750330393. The cubic root of 4086977778 is about 1598.8243679027.

The spelling of 4086977778 in words is "four billion, eighty-six million, nine hundred seventy-seven thousand, seven hundred seventy-eight".