306396994789 has 4 divisors (see below), whose sum is σ = 306400334220. Its totient is φ = 306393655360.

The previous prime is 306396994699. The next prime is 306396994847. The reversal of 306396994789 is 987499693603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987499693603 = 132199 ⋅7469797.

It can be written as a sum of positive squares in 2 ways, for example, as 76318482564 + 230078512225 = 276258^2 + 479665^2 .

It is a cyclic number.

It is not a de Polignac number, because 306396994789 - 2³¹ = 304249511141 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 (306396994889) 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, 1528084 + ... + 1716925.

It is an arithmetic number, because the mean of its divisors is an integer number (76600083555).

Almost surely, 2^306396994789 is an apocalyptic number.

It is an amenable number.

306396994789 is a deficient number, since it is larger than the sum of its proper divisors (3339431).

306396994789 is an equidigital number, since it uses as much as digits as its factorization.

306396994789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339430.

The product of its (nonzero) digits is 476171136, while the sum is 73.

The spelling of 306396994789 in words is "three hundred six billion, three hundred ninety-six million, nine hundred ninety-four thousand, seven hundred eighty-nine".