2947899 has 4 divisors (see below), whose sum is σ = 3930536. Its totient is φ = 1965264.

The previous prime is 2947897. The next prime is 2947939. The reversal of 2947899 is 9987492.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2947899 - 2¹ = 2947897 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2947891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491314 + ... + 491319.

It is an arithmetic number, because the mean of its divisors is an integer number (982634).

2^2947899 is an apocalyptic number.

2947899 is a deficient number, since it is larger than the sum of its proper divisors (982637).

2947899 is an equidigital number, since it uses as much as digits as its factorization.

2947899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982636.

The product of its digits is 326592, while the sum is 48.

The square root of 2947899 is about 1716.9446700462. The cubic root of 2947899 is about 143.3851582320.

The spelling of 2947899 in words is "two million, nine hundred forty-seven thousand, eight hundred ninety-nine".