10209445 has 8 divisors (see below), whose sum is σ = 12424320. Its totient is φ = 8052240.

The previous prime is 10209439. The next prime is 10209449. The reversal of 10209445 is 54490201.

10209445 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10209445 - 2⁷ = 10209317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10209449) 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, 14025 + ... + 14734.

It is an arithmetic number, because the mean of its divisors is an integer number (1553040).

Almost surely, 2^10209445 is an apocalyptic number.

It is an amenable number.

10209445 is a deficient number, since it is larger than the sum of its proper divisors (2214875).

10209445 is an equidigital number, since it uses as much as digits as its factorization.

10209445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28835.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 10209445 is about 3195.2222144946. Note that the first 4 decimals coincide. The cubic root of 10209445 is about 216.9372070858.

Adding to 10209445 its reverse (54490201), we get a palindrome (64699646).

The spelling of 10209445 in words is "ten million, two hundred nine thousand, four hundred forty-five".