7874129387 has 8 divisors (see below), whose sum is σ = 8299344240. Its totient is φ = 7459160800.

The previous prime is 7874129383. The next prime is 7874129423. The reversal of 7874129387 is 7839214787.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 7874129387 - 2² = 7874129383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7874129383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2559989 + ... + 2563062.

It is an arithmetic number, because the mean of its divisors is an integer number (1037418030).

Almost surely, 2^7874129387 is an apocalyptic number.

7874129387 is a deficient number, since it is larger than the sum of its proper divisors (425214853).

7874129387 is a wasteful number, since it uses less digits than its factorization.

7874129387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123133.

The product of its digits is 4741632, while the sum is 56.

The square root of 7874129387 is about 88736.2912623691. The cubic root of 7874129387 is about 1989.4552844434.

The spelling of 7874129387 in words is "seven billion, eight hundred seventy-four million, one hundred twenty-nine thousand, three hundred eighty-seven".