309007465 has 8 divisors (see below), whose sum is σ = 399332808. Its totient is φ = 228190080.

The previous prime is 309007463. The next prime is 309007471. The reversal of 309007465 is 564700903.

It can be written as a sum of positive squares in 4 ways, for example, as 40309801 + 268697664 = 6349^2 + 16392^2 .

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

It is not a de Polignac number, because 309007465 - 2¹ = 309007463 is a prime.

It is a super-2 number, since 2×309007465² = 190971226851452450, which contains 22 as substring.

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 309007465.

It is not an unprimeable number, because it can be changed into a prime (309007463) 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 7 ways as a sum of consecutive naturals, for example, 2376916 + ... + 2377045.

It is an arithmetic number, because the mean of its divisors is an integer number (49916601).

Almost surely, 2^309007465 is an apocalyptic number.

It is an amenable number.

309007465 is a deficient number, since it is larger than the sum of its proper divisors (90325343).

309007465 is a wasteful number, since it uses less digits than its factorization.

309007465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753979.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 309007465 is about 17578.6081644708. The cubic root of 309007465 is about 676.0668743582.

The spelling of 309007465 in words is "three hundred nine million, seven thousand, four hundred sixty-five".