309141799 has 4 divisors (see below), whose sum is σ = 325412440. Its totient is φ = 292871160.

The previous prime is 309141793. The next prime is 309141823. The reversal of 309141799 is 997141903.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 309141799 - 2¹³ = 309133607 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 (309141793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8135292 + ... + 8135329.

It is an arithmetic number, because the mean of its divisors is an integer number (81353110).

Almost surely, 2^309141799 is an apocalyptic number.

309141799 is a deficient number, since it is larger than the sum of its proper divisors (16270641).

309141799 is a wasteful number, since it uses less digits than its factorization.

309141799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16270640.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 309141799 is about 17582.4287002678. The cubic root of 309141799 is about 676.1648284213.

The spelling of 309141799 in words is "three hundred nine million, one hundred forty-one thousand, seven hundred ninety-nine".