2930945 has 4 divisors (see below), whose sum is σ = 3517140. Its totient is φ = 2344752.

The previous prime is 2930911. The next prime is 2930947. The reversal of 2930945 is 5490392.

It is a Cunningham number, because it is equal to 1712²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1056784 + 1874161 = 1028^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 2930945 - 2⁸ = 2930689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2930947) 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, 293090 + ... + 293099.

It is an arithmetic number, because the mean of its divisors is an integer number (879285).

2^2930945 is an apocalyptic number.

It is an amenable number.

2930945 is a deficient number, since it is larger than the sum of its proper divisors (586195).

2930945 is an equidigital number, since it uses as much as digits as its factorization.

2930945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586194.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2930945 is about 1712.0002920560. Note that the first 3 decimals coincide. The cubic root of 2930945 is about 143.1097499690.

The spelling of 2930945 in words is "two million, nine hundred thirty thousand, nine hundred forty-five".