2947947 has 16 divisors (see below), whose sum is σ = 4062240. Its totient is φ = 1900800.

The previous prime is 2947939. The next prime is 2947949. The reversal of 2947947 is 7497492.

It is not a de Polignac number, because 2947947 - 2³ = 2947939 is a prime.

2947947 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2947899 and 2947908.

It is not an unprimeable number, because it can be changed into a prime (2947949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16197 + ... + 16377.

It is an arithmetic number, because the mean of its divisors is an integer number (253890).

2^2947947 is an apocalyptic number.

2947947 is a deficient number, since it is larger than the sum of its proper divisors (1114293).

2947947 is a wasteful number, since it uses less digits than its factorization.

2947947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its digits is 127008, while the sum is 42.

The square root of 2947947 is about 1716.9586483081. The cubic root of 2947947 is about 143.3859364643.

The spelling of 2947947 in words is "two million, nine hundred forty-seven thousand, nine hundred forty-seven".