307440949 has 4 divisors (see below), whose sum is σ = 307953100. Its totient is φ = 306928800.

The previous prime is 307440941. The next prime is 307440961. The reversal of 307440949 is 949044703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949044703 = 17 ⋅55826159.

It can be written as a sum of positive squares in 2 ways, for example, as 291384900 + 16056049 = 17070^2 + 4007^2 .

It is a cyclic number.

It is not a de Polignac number, because 307440949 - 2³ = 307440941 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 (307440941) 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, 255174 + ... + 256375.

It is an arithmetic number, because the mean of its divisors is an integer number (76988275).

Almost surely, 2^307440949 is an apocalyptic number.

It is an amenable number.

307440949 is a deficient number, since it is larger than the sum of its proper divisors (512151).

307440949 is an equidigital number, since it uses as much as digits as its factorization.

307440949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512150.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 307440949 is about 17533.9940971816. The cubic root of 307440949 is about 674.9224960853.

The spelling of 307440949 in words is "three hundred seven million, four hundred forty thousand, nine hundred forty-nine".