2947291887 has 8 divisors (see below), whose sum is σ = 4160882736. Its totient is φ = 1849281152.

The previous prime is 2947291883. The next prime is 2947291889. The reversal of 2947291887 is 7881927492.

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 2947291887 - 2² = 2947291883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947291883) 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, 28894968 + ... + 28895069.

It is an arithmetic number, because the mean of its divisors is an integer number (520110342).

Almost surely, 2^2947291887 is an apocalyptic number.

2947291887 is a deficient number, since it is larger than the sum of its proper divisors (1213590849).

2947291887 is a wasteful number, since it uses less digits than its factorization.

2947291887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57790057.

The product of its digits is 4064256, while the sum is 57.

The square root of 2947291887 is about 54288.9665309628. The cubic root of 2947291887 is about 1433.7531427531.

The spelling of 2947291887 in words is "two billion, nine hundred forty-seven million, two hundred ninety-one thousand, eight hundred eighty-seven".