953949921 has 8 divisors (see below), whose sum is σ = 1274682240. Its totient is φ = 634592112.

The previous prime is 953949889. The next prime is 953949923. The reversal of 953949921 is 129949359.

It is a happy number.

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

It is not a de Polignac number, because 953949921 - 2⁵ = 953949889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (953949923) 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, 342006 + ... + 344783.

It is an arithmetic number, because the mean of its divisors is an integer number (159335280).

Almost surely, 2^953949921 is an apocalyptic number.

It is an amenable number.

953949921 is a deficient number, since it is larger than the sum of its proper divisors (320732319).

953949921 is a wasteful number, since it uses less digits than its factorization.

953949921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687255.

The product of its digits is 787320, while the sum is 51.

The square root of 953949921 is about 30886.0797285768. The cubic root of 953949921 is about 984.4081307751.

The spelling of 953949921 in words is "nine hundred fifty-three million, nine hundred forty-nine thousand, nine hundred twenty-one".