11651489 has 4 divisors (see below), whose sum is σ = 11700480. Its totient is φ = 11602500.

The previous prime is 11651483. The next prime is 11651509. The reversal of 11651489 is 98415611.

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 11651489 - 2¹² = 11647393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11651483) 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 3 ways as a sum of consecutive naturals, for example, 24137 + ... + 24614.

It is an arithmetic number, because the mean of its divisors is an integer number (2925120).

Almost surely, 2^11651489 is an apocalyptic number.

It is an amenable number.

11651489 is a deficient number, since it is larger than the sum of its proper divisors (48991).

11651489 is an equidigital number, since it uses as much as digits as its factorization.

11651489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48990.

The product of its digits is 8640, while the sum is 35.

The square root of 11651489 is about 3413.4277493452. The cubic root of 11651489 is about 226.7046752390.

The spelling of 11651489 in words is "eleven million, six hundred fifty-one thousand, four hundred eighty-nine".