203947961 has 8 divisors (see below), whose sum is σ = 233280000. Its totient is φ = 174665088.

The previous prime is 203947951. The next prime is 203948023. The reversal of 203947961 is 169749302.

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

It is a cyclic number.

It is not a de Polignac number, because 203947961 - 2¹⁴ = 203931577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203947921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2921 + ... + 20406.

It is an arithmetic number, because the mean of its divisors is an integer number (29160000).

Almost surely, 2^203947961 is an apocalyptic number.

It is an amenable number.

203947961 is a deficient number, since it is larger than the sum of its proper divisors (29332039).

203947961 is a wasteful number, since it uses less digits than its factorization.

203947961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24583.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 203947961 is about 14281.0350115109. The cubic root of 203947961 is about 588.6264716503.

The spelling of 203947961 in words is "two hundred three million, nine hundred forty-seven thousand, nine hundred sixty-one".