9949815 has 24 divisors (see below), whose sum is σ = 17392128. Its totient is φ = 5261760.

The previous prime is 9949783. The next prime is 9949829. The reversal of 9949815 is 5189499.

It is not a de Polignac number, because 9949815 - 2⁵ = 9949783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4845 + ... + 6585.

It is an arithmetic number, because the mean of its divisors is an integer number (724672).

Almost surely, 2^9949815 is an apocalyptic number.

9949815 is a deficient number, since it is larger than the sum of its proper divisors (7442313).

9949815 is a wasteful number, since it uses less digits than its factorization.

9949815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879 (or 1876 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 9949815 is about 3154.3327345098. The cubic root of 9949815 is about 215.0824634094.

The spelling of 9949815 in words is "nine million, nine hundred forty-nine thousand, eight hundred fifteen".