1306984493 has 4 divisors (see below), whose sum is σ = 1307729280. Its totient is φ = 1306239708.

The previous prime is 1306984489. The next prime is 1306984501. The reversal of 1306984493 is 3944896031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1306984493 - 2² = 1306984489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306984403) 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, 369755 + ... + 373272.

It is an arithmetic number, because the mean of its divisors is an integer number (326932320).

Almost surely, 2^1306984493 is an apocalyptic number.

It is an amenable number.

1306984493 is a deficient number, since it is larger than the sum of its proper divisors (744787).

1306984493 is an equidigital number, since it uses as much as digits as its factorization.

1306984493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744786.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 1306984493 is about 36152.2404976510. The cubic root of 1306984493 is about 1093.3439637967.

The spelling of 1306984493 in words is "one billion, three hundred six million, nine hundred eighty-four thousand, four hundred ninety-three".