1299481 has 4 divisors (see below), whose sum is σ = 1302372. Its totient is φ = 1296592.

The previous prime is 1299457. The next prime is 1299491. The reversal of 1299481 is 1849921.

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 259081 + 1040400 = 509^2 + 1020^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299481 - 2⁵ = 1299449 is a prime.

It is a super-2 number, since 2×1299481² = 3377301738722, which contains 22 as substring.

It is a Duffinian number.

1299481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1299451) 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, 610 + ... + 1723.

It is an arithmetic number, because the mean of its divisors is an integer number (325593).

2^1299481 is an apocalyptic number.

It is an amenable number.

1299481 is a deficient number, since it is larger than the sum of its proper divisors (2891).

1299481 is an equidigital number, since it uses as much as digits as its factorization.

1299481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890.

The product of its digits is 5184, while the sum is 34.

The square root of 1299481 is about 1139.9478058227. The cubic root of 1299481 is about 109.1247624522.

The spelling of 1299481 in words is "one million, two hundred ninety-nine thousand, four hundred eighty-one".