19420959 has 8 divisors (see below), whose sum is σ = 26146432. Its totient is φ = 12821400.

The previous prime is 19420943. The next prime is 19420979. The reversal of 19420959 is 95902491.

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

It is not a de Polignac number, because 19420959 - 2⁴ = 19420943 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 (19420939) 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, 31117 + ... + 31734.

It is an arithmetic number, because the mean of its divisors is an integer number (3268304).

Almost surely, 2^19420959 is an apocalyptic number.

19420959 is a deficient number, since it is larger than the sum of its proper divisors (6725473).

19420959 is a wasteful number, since it uses less digits than its factorization.

19420959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62957.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 19420959 is about 4406.9217147574. The cubic root of 19420959 is about 268.7964676097.

The spelling of 19420959 in words is "nineteen million, four hundred twenty thousand, nine hundred fifty-nine".