309474047 has 8 divisors (see below), whose sum is σ = 315479040. Its totient is φ = 303521400.

The previous prime is 309474037. The next prime is 309474059. The reversal of 309474047 is 740474903.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 309474047 - 2¹⁰ = 309473023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 309474047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309474037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043 + ... + 24900.

It is an arithmetic number, because the mean of its divisors is an integer number (39434880).

Almost surely, 2^309474047 is an apocalyptic number.

309474047 is a deficient number, since it is larger than the sum of its proper divisors (6004993).

309474047 is a wasteful number, since it uses less digits than its factorization.

309474047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26173.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 309474047 is about 17591.8744595339. The cubic root of 309474047 is about 676.4069761765.

The spelling of 309474047 in words is "three hundred nine million, four hundred seventy-four thousand, forty-seven".