1299401 has 4 divisors (see below), whose sum is σ = 1323972. Its totient is φ = 1274832.

The previous prime is 1299379. The next prime is 1299437. The reversal of 1299401 is 1049921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1049921 = 19 ⋅55259.

It can be written as a sum of positive squares in 2 ways, for example, as 602176 + 697225 = 776^2 + 835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299401 - 2¹⁴ = 1283017 is a prime.

It is a Duffinian 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, 12206 + ... + 12311.

It is an arithmetic number, because the mean of its divisors is an integer number (330993).

2^1299401 is an apocalyptic number.

It is an amenable number.

1299401 is a deficient number, since it is larger than the sum of its proper divisors (24571).

1299401 is an equidigital number, since it uses as much as digits as its factorization.

1299401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24570.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1299401 is about 1139.9127159568. The cubic root of 1299401 is about 109.1225230556.

The spelling of 1299401 in words is "one million, two hundred ninety-nine thousand, four hundred one".