7947740238 has 8 divisors (see below), whose sum is σ = 15895480488. Its totient is φ = 2649246744.

The previous prime is 7947740219. The next prime is 7947740249. The reversal of 7947740238 is 8320477497.

It is a sphenic number, since it is the product of 3 distinct primes.

7947740238 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662311681 + ... + 662311692.

It is an arithmetic number, because the mean of its divisors is an integer number (1986935061).

Almost surely, 2^7947740238 is an apocalyptic number.

7947740238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7947740238 is a wasteful number, since it uses less digits than its factorization.

7947740238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324623378.

The product of its (nonzero) digits is 2370816, while the sum is 51.

The square root of 7947740238 is about 89150.0994839602. The cubic root of 7947740238 is about 1995.6355023416.

The spelling of 7947740238 in words is "seven billion, nine hundred forty-seven million, seven hundred forty thousand, two hundred thirty-eight".