4199445 has 20 divisors (see below), whose sum is σ = 7528620. Its totient is φ = 2239488.

The previous prime is 4199441. The next prime is 4199473. The reversal of 4199445 is 5449914.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 762129 + 3437316 = 873^2 + 1854^2 .

It is not a de Polignac number, because 4199445 - 2² = 4199441 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4199441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4780 + ... + 5589.

It is an arithmetic number, because the mean of its divisors is an integer number (376431).

Almost surely, 2^4199445 is an apocalyptic number.

4199445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4199445 is a deficient number, since it is larger than the sum of its proper divisors (3329175).

4199445 is a wasteful number, since it uses less digits than its factorization.

4199445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10386 (or 10377 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 4199445 is about 2049.2547425833. The cubic root of 4199445 is about 161.3357575204.

The spelling of 4199445 in words is "four million, one hundred ninety-nine thousand, four hundred forty-five".