2947392247 has 8 divisors (see below), whose sum is σ = 3077422560. Its totient is φ = 2817518880.

The previous prime is 2947392211. The next prime is 2947392269. The reversal of 2947392247 is 7422937492.

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 a de Polignac number, because none of the positive numbers 2^k-2947392247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2947392247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947302247) 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, 4 + ... + 76777.

It is an arithmetic number, because the mean of its divisors is an integer number (384677820).

Almost surely, 2^2947392247 is an apocalyptic number.

2947392247 is a deficient number, since it is larger than the sum of its proper divisors (130030313).

2947392247 is a wasteful number, since it uses less digits than its factorization.

2947392247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78473.

The product of its digits is 1524096, while the sum is 49.

The square root of 2947392247 is about 54289.8908361400. The cubic root of 2947392247 is about 1433.7694164305.

The spelling of 2947392247 in words is "two billion, nine hundred forty-seven million, three hundred ninety-two thousand, two hundred forty-seven".