9997995 has 16 divisors (see below), whose sum is σ = 18282240. Its totient is φ = 4570464.

The previous prime is 9997991. The next prime is 9997997. The reversal of 9997995 is 5997999.

9997995 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9997995 - 2² = 9997991 is a prime.

9997995 is strictly pandigital in base 8.

9997995 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9997991) 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, 47505 + ... + 47714.

It is an arithmetic number, because the mean of its divisors is an integer number (1142640).

Almost surely, 2^9997995 is an apocalyptic number.

9997995 is a deficient number, since it is larger than the sum of its proper divisors (8284245).

9997995 is a wasteful number, since it uses less digits than its factorization.

9997995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95234.

The product of its digits is 2066715, while the sum is 57.

The square root of 9997995 is about 3161.9606259408. The cubic root of 9997995 is about 215.4290692356.

The spelling of 9997995 in words is "nine million, nine hundred ninety-seven thousand, nine hundred ninety-five".