4090040778 has 16 divisors (see below), whose sum is σ = 8661263040. Its totient is φ = 1283150016.

The previous prime is 4090040771. The next prime is 4090040783. The reversal of 4090040778 is 8770400904.

4090040778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (4090040771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20049118 + ... + 20049321.

It is an arithmetic number, because the mean of its divisors is an integer number (541328940).

Almost surely, 2^4090040778 is an apocalyptic number.

4090040778 is an abundant number, since it is smaller than the sum of its proper divisors (4571222262).

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

4090040778 is a wasteful number, since it uses less digits than its factorization.

4090040778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40098461.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 4090040778 is about 63953.4266321985. The cubic root of 4090040778 is about 1599.2236830288.

The spelling of 4090040778 in words is "four billion, ninety million, forty thousand, seven hundred seventy-eight".