7934309640 has 192 divisors, whose sum is σ = 27120562560. Its totient is φ = 2085834240.

The previous prime is 7934309587. The next prime is 7934309651. The reversal of 7934309640 is 469034397.

7934309640 is a `hidden beast` number, since 7 + 93 + 430 + 96 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 684372 + ... + 695868.

It is an arithmetic number, because the mean of its divisors is an integer number (141252930).

Almost surely, 2^7934309640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7934309640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13560281280).

7934309640 is an abundant number, since it is smaller than the sum of its proper divisors (19186252920).

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

7934309640 is a wasteful number, since it uses less digits than its factorization.

7934309640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11594 (or 11578 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 7934309640 is about 89074.7418744506. The cubic root of 7934309640 is about 1994.5107511905.

The spelling of 7934309640 in words is "seven billion, nine hundred thirty-four million, three hundred nine thousand, six hundred forty".