303947961 has 8 divisors (see below), whose sum is σ = 405417504. Its totient is φ = 202555200.

The previous prime is 303947923. The next prime is 303947971. The reversal of 303947961 is 169749303.

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

It is not a de Polignac number, because 303947961 - 2¹⁸ = 303685817 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (303947911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9216 + ... + 26321.

It is an arithmetic number, because the mean of its divisors is an integer number (50677188).

Almost surely, 2^303947961 is an apocalyptic number.

It is an amenable number.

303947961 is a deficient number, since it is larger than the sum of its proper divisors (101469543).

303947961 is a wasteful number, since it uses less digits than its factorization.

303947961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38391.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 303947961 is about 17434.1033896212. The cubic root of 303947961 is about 672.3567121006.

The spelling of 303947961 in words is "three hundred three million, nine hundred forty-seven thousand, nine hundred sixty-one".