9919995 has 16 divisors (see below), whose sum is σ = 16707840. Its totient is φ = 5012064.

The previous prime is 9919979. The next prime is 9919997. The reversal of 9919995 is 5999199.

It is not a de Polignac number, because 9919995 - 2⁴ = 9919979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9919997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17119 + ... + 17688.

It is an arithmetic number, because the mean of its divisors is an integer number (1044240).

Almost surely, 2^9919995 is an apocalyptic number.

9919995 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

9919995 is a deficient number, since it is larger than the sum of its proper divisors (6787845).

9919995 is a wasteful number, since it uses less digits than its factorization.

9919995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34834.

The product of its digits is 295245, while the sum is 51.

The square root of 9919995 is about 3149.6023558538. The cubic root of 9919995 is about 214.8673780978.

The spelling of 9919995 in words is "nine million, nine hundred nineteen thousand, nine hundred ninety-five".