309144094 has 8 divisors (see below), whose sum is σ = 529961328. Its totient is φ = 132490320.

The previous prime is 309144091. The next prime is 309144103. The reversal of 309144094 is 490441903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309144091) 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, 11040847 + ... + 11040874.

It is an arithmetic number, because the mean of its divisors is an integer number (66245166).

Almost surely, 2^309144094 is an apocalyptic number.

309144094 is a deficient number, since it is larger than the sum of its proper divisors (220817234).

309144094 is a wasteful number, since it uses less digits than its factorization.

309144094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22081730.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 309144094 is about 17582.4939641679. The cubic root of 309144094 is about 676.1665016496.

Adding to 309144094 its reverse (490441903), we get a palindrome (799585997).

The spelling of 309144094 in words is "three hundred nine million, one hundred forty-four thousand, ninety-four".