9949251289 has 4 divisors (see below), whose sum is σ = 10381827456. Its totient is φ = 9516675124.

The previous prime is 9949251281. The next prime is 9949251313. The reversal of 9949251289 is 9821529499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9821529499 = 29 ⋅338673431.

It is a cyclic number.

It is not a de Polignac number, because 9949251289 - 2³ = 9949251281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9949251281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216288049 + ... + 216288094.

It is an arithmetic number, because the mean of its divisors is an integer number (2595456864).

Almost surely, 2^9949251289 is an apocalyptic number.

It is an amenable number.

9949251289 is a deficient number, since it is larger than the sum of its proper divisors (432576167).

9949251289 is a wasteful number, since it uses less digits than its factorization.

9949251289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432576166.

The product of its digits is 4199040, while the sum is 58.

The square root of 9949251289 is about 99745.9336965673. The cubic root of 9949251289 is about 2150.7840146990.

The spelling of 9949251289 in words is "nine billion, nine hundred forty-nine million, two hundred fifty-one thousand, two hundred eighty-nine".