2897947 has 4 divisors (see below), whose sum is σ = 3120880. Its totient is φ = 2675016.

The previous prime is 2897933. The next prime is 2897959. The reversal of 2897947 is 7497982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7497982 = 2 ⋅3748991.

It is a cyclic number.

It is not a de Polignac number, because 2897947 - 2⁷ = 2897819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2897897 and 2897906.

It is not an unprimeable number, because it can be changed into a prime (2897047) 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, 111447 + ... + 111472.

It is an arithmetic number, because the mean of its divisors is an integer number (780220).

2^2897947 is an apocalyptic number.

2897947 is a deficient number, since it is larger than the sum of its proper divisors (222933).

2897947 is a wasteful number, since it uses less digits than its factorization.

2897947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222932.

The product of its digits is 254016, while the sum is 46.

The square root of 2897947 is about 1702.3357483176. The cubic root of 2897947 is about 142.5706554302.

It can be divided in two parts, 2897 and 947, that added together give a square (3844 = 62²).

The spelling of 2897947 in words is "two million, eight hundred ninety-seven thousand, nine hundred forty-seven".