5639774994 has 96 divisors (see below), whose sum is σ = 14322806784. Its totient is φ = 1570272480.

The previous prime is 5639774993. The next prime is 5639774999. The reversal of 5639774994 is 4994779365.

5639774994 is a `hidden beast` number, since 56 + 3 + 97 + 7 + 499 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5639774993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3092767 + ... + 3094589.

It is an arithmetic number, because the mean of its divisors is an integer number (149195904).

Almost surely, 2^5639774994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5639774994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7161403392).

5639774994 is an abundant number, since it is smaller than the sum of its proper divisors (8683031790).

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

5639774994 is a wasteful number, since it uses less digits than its factorization.

5639774994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2449 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 63.

The square root of 5639774994 is about 75098.4353631952. The cubic root of 5639774994 is about 1780.0024190936.

The spelling of 5639774994 in words is "five billion, six hundred thirty-nine million, seven hundred seventy-four thousand, nine hundred ninety-four".