19494959 has 8 divisors (see below), whose sum is σ = 21321552. Its totient is φ = 17677440.

The previous prime is 19494949. The next prime is 19495009. The reversal of 19494959 is 95949491.

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

It is a de Polignac number, because none of the positive numbers 2^k-19494959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19494949) 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 7 ways as a sum of consecutive naturals, for example, 2717 + ... + 6809.

It is an arithmetic number, because the mean of its divisors is an integer number (2665194).

Almost surely, 2^19494959 is an apocalyptic number.

19494959 is a deficient number, since it is larger than the sum of its proper divisors (1826593).

19494959 is a wasteful number, since it uses less digits than its factorization.

19494959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537.

The product of its digits is 524880, while the sum is 50.

The square root of 19494959 is about 4415.3096154177. The cubic root of 19494959 is about 269.1374347808.

The spelling of 19494959 in words is "nineteen million, four hundred ninety-four thousand, nine hundred fifty-nine".