11954689 has 4 divisors (see below), whose sum is σ = 12657924. Its totient is φ = 11251456.

The previous prime is 11954671. The next prime is 11954707. The reversal of 11954689 is 98645911.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11954671) and next prime (11954707).

It can be written as a sum of positive squares in 2 ways, for example, as 3591025 + 8363664 = 1895^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 11954689 - 2²¹ = 9857537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11954659) 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, 351592 + ... + 351625.

It is an arithmetic number, because the mean of its divisors is an integer number (3164481).

Almost surely, 2^11954689 is an apocalyptic number.

It is an amenable number.

11954689 is a deficient number, since it is larger than the sum of its proper divisors (703235).

11954689 is an equidigital number, since it uses as much as digits as its factorization.

11954689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703234.

The product of its digits is 77760, while the sum is 43.

The square root of 11954689 is about 3457.5553502439. Note that the first 3 decimals coincide. The cubic root of 11954689 is about 228.6543286906.

The spelling of 11954689 in words is "eleven million, nine hundred fifty-four thousand, six hundred eighty-nine".