1299445 has 16 divisors (see below), whose sum is σ = 1801728. Its totient is φ = 881280.

The previous prime is 1299439. The next prime is 1299449. The reversal of 1299445 is 5449921.

1299445 = 21² + 22² + ... + 157².

It is not a de Polignac number, because 1299445 - 2³ = 1299437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1299445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4660 + ... + 4930.

It is an arithmetic number, because the mean of its divisors is an integer number (112608).

2^1299445 is an apocalyptic number.

It is an amenable number.

1299445 is a deficient number, since it is larger than the sum of its proper divisors (502283).

1299445 is a wasteful number, since it uses less digits than its factorization.

1299445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its digits is 12960, while the sum is 34.

The square root of 1299445 is about 1139.9320155167. The cubic root of 1299445 is about 109.1237547351.

The spelling of 1299445 in words is "one million, two hundred ninety-nine thousand, four hundred forty-five".