1299641 has 8 divisors (see below), whose sum is σ = 1492224. Its totient is φ = 1108800.

The previous prime is 1299637. The next prime is 1299647. The reversal of 1299641 is 1469921.

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

It is not a de Polignac number, because 1299641 - 2² = 1299637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1299598 and 1299607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299647) 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, 2576 + ... + 3038.

It is an arithmetic number, because the mean of its divisors is an integer number (186528).

2^1299641 is an apocalyptic number.

It is an amenable number.

1299641 is a deficient number, since it is larger than the sum of its proper divisors (192583).

1299641 is an equidigital number, since it uses as much as digits as its factorization.

1299641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its digits is 3888, while the sum is 32.

The square root of 1299641 is about 1140.0179823143. The cubic root of 1299641 is about 109.1292409698.

The spelling of 1299641 in words is "one million, two hundred ninety-nine thousand, six hundred forty-one".