9949997 has 4 divisors (see below), whose sum is σ = 9985440. Its totient is φ = 9914556.

The previous prime is 9949967. The next prime is 9950021. The reversal of 9949997 is 7999499.

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.

It is a cyclic number.

It is not a de Polignac number, because 9949997 - 2⁸ = 9949741 is a prime.

It is a super-3 number, since 3×9949997³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949967) 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, 17297 + ... + 17862.

It is an arithmetic number, because the mean of its divisors is an integer number (2496360).

Almost surely, 2^9949997 is an apocalyptic number.

It is an amenable number.

9949997 is a deficient number, since it is larger than the sum of its proper divisors (35443).

9949997 is a wasteful number, since it uses less digits than its factorization.

9949997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35442.

The product of its digits is 1653372, while the sum is 56.

The square root of 9949997 is about 3154.3615835855. The cubic root of 9949997 is about 215.0837748164.

The spelling of 9949997 in words is "nine million, nine hundred forty-nine thousand, nine hundred ninety-seven".