19909483 has 4 divisors (see below), whose sum is σ = 21719448. Its totient is φ = 18099520.

The previous prime is 19909469. The next prime is 19909493. The reversal of 19909483 is 38490991.

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

It is a cyclic number.

It is not a de Polignac number, because 19909483 - 2⁵ = 19909451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19909433) 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, 904966 + ... + 904987.

It is an arithmetic number, because the mean of its divisors is an integer number (5429862).

Almost surely, 2^19909483 is an apocalyptic number.

19909483 is a deficient number, since it is larger than the sum of its proper divisors (1809965).

19909483 is a wasteful number, since it uses less digits than its factorization.

19909483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809964.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 19909483 is about 4462.0043702354. The cubic root of 19909483 is about 271.0316407549.

The spelling of 19909483 in words is "nineteen million, nine hundred nine thousand, four hundred eighty-three".