19241939 has 4 divisors (see below), whose sum is σ = 19281000. Its totient is φ = 19202880.

The previous prime is 19241933. The next prime is 19241947. The reversal of 19241939 is 93914291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93914291 = 109 ⋅861599.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19241939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19241933) 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, 18782 + ... + 19779.

It is an arithmetic number, because the mean of its divisors is an integer number (4820250).

Almost surely, 2^19241939 is an apocalyptic number.

19241939 is a deficient number, since it is larger than the sum of its proper divisors (39061).

19241939 is an equidigital number, since it uses as much as digits as its factorization.

19241939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39060.

The product of its digits is 17496, while the sum is 38.

The square root of 19241939 is about 4386.5634612986. The cubic root of 19241939 is about 267.9680059453.

The spelling of 19241939 in words is "nineteen million, two hundred forty-one thousand, nine hundred thirty-nine".