4394717680 has 20 divisors (see below), whose sum is σ = 10217718792. Its totient is φ = 1757887040.

The previous prime is 4394717671. The next prime is 4394717687. The reversal of 4394717680 is 867174934.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4394717687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27466906 + ... + 27467065.

Almost surely, 2^4394717680 is an apocalyptic number.

4394717680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4394717680 is an abundant number, since it is smaller than the sum of its proper divisors (5823001112).

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

4394717680 is a wasteful number, since it uses less digits than its factorization.

4394717680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54933984 (or 54933978 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 4394717680 is about 66292.6668644429. Note that the first 3 decimals coincide. The cubic root of 4394717680 is about 1637.9865335926.

The spelling of 4394717680 in words is "four billion, three hundred ninety-four million, seven hundred seventeen thousand, six hundred eighty".