305940897 has 12 divisors (see below), whose sum is σ = 442151424. Its totient is φ = 203851320.

The previous prime is 305940889. The next prime is 305940919. The reversal of 305940897 is 798049503.

It is not a de Polignac number, because 305940897 - 2³ = 305940889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (305940847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10948 + ... + 27050.

It is an arithmetic number, because the mean of its divisors is an integer number (36845952).

Almost surely, 2^305940897 is an apocalyptic number.

It is an amenable number.

305940897 is a deficient number, since it is larger than the sum of its proper divisors (136210527).

305940897 is a wasteful number, since it uses less digits than its factorization.

305940897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18220 (or 18217 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 305940897 is about 17491.1662561420. The cubic root of 305940897 is about 673.8230221819.

It can be divided in two parts, 3059 and 40897, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 305940897 in words is "three hundred five million, nine hundred forty thousand, eight hundred ninety-seven".