19409434 has 8 divisors (see below), whose sum is σ = 31760928. Its totient is φ = 8822460.

The previous prime is 19409413. The next prime is 19409437. The reversal of 19409434 is 43490491.

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

It is a super-2 number, since 2×19409434² = 753452256400712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19409434.

It is not an unprimeable number, because it can be changed into a prime (19409437) 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, 441102 + ... + 441145.

It is an arithmetic number, because the mean of its divisors is an integer number (3970116).

Almost surely, 2^19409434 is an apocalyptic number.

19409434 is a deficient number, since it is larger than the sum of its proper divisors (12351494).

19409434 is a wasteful number, since it uses less digits than its factorization.

19409434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882260.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 19409434 is about 4405.6139186270. The cubic root of 19409434 is about 268.7432863655.

The spelling of 19409434 in words is "nineteen million, four hundred nine thousand, four hundred thirty-four".