54099689 has 4 divisors (see below), whose sum is σ = 61828224. Its totient is φ = 46371156.

The previous prime is 54099671. The next prime is 54099737. The reversal of 54099689 is 98699045.

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 a de Polignac number, because none of the positive numbers 2^k-54099689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54099659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3864257 + ... + 3864270.

It is an arithmetic number, because the mean of its divisors is an integer number (15457056).

Almost surely, 2^54099689 is an apocalyptic number.

It is an amenable number.

54099689 is a deficient number, since it is larger than the sum of its proper divisors (7728535).

54099689 is an equidigital number, since it uses as much as digits as its factorization.

54099689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7728534.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 54099689 is about 7355.2490780394. The cubic root of 54099689 is about 378.2087650774.

The spelling of 54099689 in words is "fifty-four million, ninety-nine thousand, six hundred eighty-nine".