6289945 has 4 divisors (see below), whose sum is σ = 7547940. Its totient is φ = 5031952.

The previous prime is 6289939. The next prime is 6289957. The reversal of 6289945 is 5499826.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5499826 = 2 ⋅2749913.

It can be written as a sum of positive squares in 2 ways, for example, as 2785561 + 3504384 = 1669^2 + 1872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6289945 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628990 + ... + 628999.

It is an arithmetic number, because the mean of its divisors is an integer number (1886985).

Almost surely, 2^6289945 is an apocalyptic number.

It is an amenable number.

6289945 is a deficient number, since it is larger than the sum of its proper divisors (1257995).

6289945 is a wasteful number, since it uses less digits than its factorization.

6289945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257994.

The product of its digits is 155520, while the sum is 43.

The square root of 6289945 is about 2507.9762758049. The cubic root of 6289945 is about 184.5931649051.

The spelling of 6289945 in words is "six million, two hundred eighty-nine thousand, nine hundred forty-five".