9949694951 has 16 divisors (see below), whose sum is σ = 11611334400. Its totient is φ = 8522289720.

The previous prime is 9949694947. The next prime is 9949695013. The reversal of 9949694951 is 1594969499.

It is not a de Polignac number, because 9949694951 - 2² = 9949694947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949694351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515660 + ... + 534606.

It is an arithmetic number, because the mean of its divisors is an integer number (725708400).

Almost surely, 2^9949694951 is an apocalyptic number.

9949694951 is a deficient number, since it is larger than the sum of its proper divisors (1661639449).

9949694951 is a wasteful number, since it uses less digits than its factorization.

9949694951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20499 (or 20485 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 65.

The square root of 9949694951 is about 99748.1576321087. The cubic root of 9949694951 is about 2150.8159838367.

The spelling of 9949694951 in words is "nine billion, nine hundred forty-nine million, six hundred ninety-four thousand, nine hundred fifty-one".