4447778998 has 16 divisors (see below), whose sum is σ = 7188552000. Its totient is φ = 2051770176.

The previous prime is 4447778977. The next prime is 4447778999. The reversal of 4447778998 is 8998777444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4447778999) 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, 9186 + ... + 94762.

It is an arithmetic number, because the mean of its divisors is an integer number (449284500).

Almost surely, 2^4447778998 is an apocalyptic number.

4447778998 is a deficient number, since it is larger than the sum of its proper divisors (2740773002).

4447778998 is a wasteful number, since it uses less digits than its factorization.

4447778998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87591.

The product of its digits is 113799168, while the sum is 67.

The square root of 4447778998 is about 66691.6711291597. The cubic root of 4447778998 is about 1644.5524659078.

The spelling of 4447778998 in words is "four billion, four hundred forty-seven million, seven hundred seventy-eight thousand, nine hundred ninety-eight".