9981497 has 8 divisors (see below), whose sum is σ = 10164000. Its totient is φ = 9800640.

The previous prime is 9981467. The next prime is 9981551. The reversal of 9981497 is 7941899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9981497 - 2¹⁰ = 9980473 is a prime.

It is a super-2 number, since 2×9981497² = 199260564722018, which contains 22 as substring.

It is a Duffinian number.

9981497 is a modest number, since divided by 1497 gives 998 as remainder.

It is not an unprimeable number, because it can be changed into a prime (9981467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19754 + ... + 20252.

It is an arithmetic number, because the mean of its divisors is an integer number (1270500).

Almost surely, 2^9981497 is an apocalyptic number.

It is an amenable number.

9981497 is a deficient number, since it is larger than the sum of its proper divisors (182503).

9981497 is a wasteful number, since it uses less digits than its factorization.

9981497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its digits is 163296, while the sum is 47.

The square root of 9981497 is about 3159.3507244369. The cubic root of 9981497 is about 215.3105086137.

The spelling of 9981497 in words is "nine million, nine hundred eighty-one thousand, four hundred ninety-seven".