19953339 has 16 divisors (see below), whose sum is σ = 31027200. Its totient is φ = 11401320.

The previous prime is 19953331. The next prime is 19953341. The reversal of 19953339 is 93335991.

It is not a de Polignac number, because 19953339 - 2³ = 19953331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19953339.

It is not an unprimeable number, because it can be changed into a prime (19953331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8667 + ... + 10724.

It is an arithmetic number, because the mean of its divisors is an integer number (1939200).

Almost surely, 2^19953339 is an apocalyptic number.

19953339 is a deficient number, since it is larger than the sum of its proper divisors (11073861).

19953339 is an equidigital number, since it uses as much as digits as its factorization.

19953339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19415 (or 19401 counting only the distinct ones).

The product of its digits is 98415, while the sum is 42.

The square root of 19953339 is about 4466.9160502521. The cubic root of 19953339 is about 271.2305015467.

The spelling of 19953339 in words is "nineteen million, nine hundred fifty-three thousand, three hundred thirty-nine".