19439950 has 24 divisors (see below), whose sum is σ = 36325800. Its totient is φ = 7740000.

The previous prime is 19439941. The next prime is 19439951. The reversal of 19439950 is 5993491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19439951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11776 + ... + 13324.

It is an arithmetic number, because the mean of its divisors is an integer number (1513575).

Almost surely, 2^19439950 is an apocalyptic number.

19439950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19439950 is a deficient number, since it is larger than the sum of its proper divisors (16885850).

19439950 is a wasteful number, since it uses less digits than its factorization.

19439950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1807 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 19439950 is about 4409.0758668909. The cubic root of 19439950 is about 268.8840542683.

The spelling of 19439950 in words is "nineteen million, four hundred thirty-nine thousand, nine hundred fifty".