9251099961 has 8 divisors (see below), whose sum is σ = 12348804384. Its totient is φ = 6160397760.

The previous prime is 9251099959. The next prime is 9251099969. The reversal of 9251099961 is 1699901529.

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 9251099961 - 2¹ = 9251099959 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9251099969) 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, 1747471 + ... + 1752756.

It is an arithmetic number, because the mean of its divisors is an integer number (1543600548).

Almost surely, 2^9251099961 is an apocalyptic number.

It is an amenable number.

9251099961 is a deficient number, since it is larger than the sum of its proper divisors (3097704423).

9251099961 is a wasteful number, since it uses less digits than its factorization.

9251099961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501111.

The product of its (nonzero) digits is 393660, while the sum is 51.

The square root of 9251099961 is about 96182.6385633083. The cubic root of 9251099961 is about 2099.2514309281.

The spelling of 9251099961 in words is "nine billion, two hundred fifty-one million, ninety-nine thousand, nine hundred sixty-one".