7875744427 has 4 divisors (see below), whose sum is σ = 7876199016. Its totient is φ = 7875289840.

The previous prime is 7875744419. The next prime is 7875744449. The reversal of 7875744427 is 7244475787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7244475787 = 307 ⋅23597641.

It is a cyclic number.

It is not a de Polignac number, because 7875744427 - 2³ = 7875744419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7875744467) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 200233 + ... + 236314.

It is an arithmetic number, because the mean of its divisors is an integer number (1969049754).

Almost surely, 2^7875744427 is an apocalyptic number.

7875744427 is a deficient number, since it is larger than the sum of its proper divisors (454589).

7875744427 is a wasteful number, since it uses less digits than its factorization.

7875744427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454588.

The product of its digits is 12293120, while the sum is 55.

The square root of 7875744427 is about 88745.3910183509. The cubic root of 7875744427 is about 1989.5912922929.

The spelling of 7875744427 in words is "seven billion, eight hundred seventy-five million, seven hundred forty-four thousand, four hundred twenty-seven".