8404342644 has 24 divisors (see below), whose sum is σ = 19611764928. Its totient is φ = 2801214400.

The previous prime is 8404342621. The next prime is 8404342657. The reversal of 8404342644 is 4462434048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182569 + ... + 223919.

It is an arithmetic number, because the mean of its divisors is an integer number (817156872).

Almost surely, 2^8404342644 is an apocalyptic number.

It is an amenable number.

8404342644 is an abundant number, since it is smaller than the sum of its proper divisors (11207422284).

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

8404342644 is a wasteful number, since it uses less digits than its factorization.

8404342644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58295 (or 58293 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 39.

The square root of 8404342644 is about 91675.2019032410. The cubic root of 8404342644 is about 2033.1429586403.

The spelling of 8404342644 in words is "eight billion, four hundred four million, three hundred forty-two thousand, six hundred forty-four".