1309401 has 12 divisors (see below), whose sum is σ = 1918228. Its totient is φ = 860544.

The previous prime is 1309397. The next prime is 1309411. The reversal of 1309401 is 1049031.

It can be written as a sum of positive squares in 2 ways, for example, as 853776 + 455625 = 924^2 + 675^2 .

It is not a de Polignac number, because 1309401 - 2² = 1309397 is a prime.

It is a Duffinian number.

1309401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1309411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340 + ... + 1653.

2^1309401 is an apocalyptic number.

It is an amenable number.

1309401 is a deficient number, since it is larger than the sum of its proper divisors (608827).

1309401 is a wasteful number, since it uses less digits than its factorization.

1309401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072 (or 2069 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1309401 is about 1144.2906099414. The cubic root of 1309401 is about 109.4017383336.

The spelling of 1309401 in words is "one million, three hundred nine thousand, four hundred one".