11497997 has 6 divisors (see below), whose sum is σ = 13375278. Its totient is φ = 9855384.

The previous prime is 11497991. The next prime is 11498017. The reversal of 11497997 is 79979411.

It can be written as a sum of positive squares in only one way, i.e., 5900041 + 5597956 = 2429^2 + 2366^2 .

It is not a de Polignac number, because 11497997 - 2¹⁶ = 11432461 is a prime.

It is a super-3 number, since 3×11497997³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11497991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117278 + ... + 117375.

It is an arithmetic number, because the mean of its divisors is an integer number (2229213).

Almost surely, 2^11497997 is an apocalyptic number.

It is an amenable number.

11497997 is a deficient number, since it is larger than the sum of its proper divisors (1877281).

11497997 is an equidigital number, since it uses as much as digits as its factorization.

11497997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234667 (or 234660 counting only the distinct ones).

The product of its digits is 142884, while the sum is 47.

The square root of 11497997 is about 3390.8696524638. The cubic root of 11497997 is about 225.7047662911.

The spelling of 11497997 in words is "eleven million, four hundred ninety-seven thousand, nine hundred ninety-seven".