1309413 has 16 divisors (see below), whose sum is σ = 2082816. Its totient is φ = 715440.

The previous prime is 1309411. The next prime is 1309421. The reversal of 1309413 is 3149031.

It is not a de Polignac number, because 1309413 - 2¹ = 1309411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1309413.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 873 + ... + 1838.

It is an arithmetic number, because the mean of its divisors is an integer number (130176).

2^1309413 is an apocalyptic number.

It is an amenable number.

1309413 is a deficient number, since it is larger than the sum of its proper divisors (773403).

1309413 is a wasteful number, since it uses less digits than its factorization.

1309413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1309413 is about 1144.2958533526. The cubic root of 1309413 is about 109.4020725365.

The spelling of 1309413 in words is "one million, three hundred nine thousand, four hundred thirteen".