7885544940 has 384 divisors, whose sum is σ = 31511531520. Its totient is φ = 1591197696.

The previous prime is 7885544903. The next prime is 7885544971. The reversal of 7885544940 is 494455887.

It is a happy number.

7885544940 is a `hidden beast` number, since 7 + 8 + 8 + 5 + 544 + 94 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1126732 + ... + 1133708.

It is an arithmetic number, because the mean of its divisors is an integer number (82061280).

Almost surely, 2^7885544940 is an apocalyptic number.

7885544940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7885544940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15755765760).

7885544940 is an abundant number, since it is smaller than the sum of its proper divisors (23625986580).

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

7885544940 is a wasteful number, since it uses less digits than its factorization.

7885544940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038 (or 7030 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The square root of 7885544940 is about 88800.5908764125. The cubic root of 7885544940 is about 1990.4162273389.

The spelling of 7885544940 in words is "seven billion, eight hundred eighty-five million, five hundred forty-four thousand, nine hundred forty".