307449 has 16 divisors (see below), whose sum is σ = 465600. Its totient is φ = 200448.

The previous prime is 307423. The next prime is 307451. The reversal of 307449 is 944703.

307449 = 17² + 18² + ... + 97².

It is not a de Polignac number, because 307449 - 2¹¹ = 305401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

307449 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 307449.

It is not an unprimeable number, because it can be changed into a prime (307409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1497 + ... + 1689.

It is an arithmetic number, because the mean of its divisors is an integer number (29100).

2³⁰⁷⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

307449 is a deficient number, since it is larger than the sum of its proper divisors (158151).

307449 is a wasteful number, since it uses less digits than its factorization.

307449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 307449 is about 554.4808382622. The cubic root of 307449 is about 67.4928387464.

The spelling of 307449 in words is "three hundred seven thousand, four hundred forty-nine".