9949949 has 4 divisors (see below), whose sum is σ = 9956736. Its totient is φ = 9943164.

The previous prime is 9949943. The next prime is 9949963. The reversal of 9949949 is 9499499.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9949949 - 2¹² = 9945853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9949949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949943) 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, 179 + ... + 4464.

It is an arithmetic number, because the mean of its divisors is an integer number (2489184).

Almost surely, 2^9949949 is an apocalyptic number.

It is an amenable number.

9949949 is a deficient number, since it is larger than the sum of its proper divisors (6787).

9949949 is a wasteful number, since it uses less digits than its factorization.

9949949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6786.

The product of its digits is 944784, while the sum is 53.

The square root of 9949949 is about 3154.3539750637. The cubic root of 9949949 is about 215.0834289524.

The spelling of 9949949 in words is "nine million, nine hundred forty-nine thousand, nine hundred forty-nine".