2947445 has 8 divisors (see below), whose sum is σ = 3551136. Its totient is φ = 2348496.

The previous prime is 2947429. The next prime is 2947447. The reversal of 2947445 is 5447492.

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 2947445 - 2⁴ = 2947429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947447) 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, 374 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (443892).

2^2947445 is an apocalyptic number.

It is an amenable number.

2947445 is a deficient number, since it is larger than the sum of its proper divisors (603691).

2947445 is a wasteful number, since it uses less digits than its factorization.

2947445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371.

The product of its digits is 40320, while the sum is 35.

The square root of 2947445 is about 1716.8124533565. The cubic root of 2947445 is about 143.3777970341.

It can be divided in two parts, 29 and 47445, that added together give a palindrome (47474).

The spelling of 2947445 in words is "two million, nine hundred forty-seven thousand, four hundred forty-five".