19939295 has 4 divisors (see below), whose sum is σ = 23927160. Its totient is φ = 15951432.

The previous prime is 19939277. The next prime is 19939307. The reversal of 19939295 is 59293991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19939295 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1993925 + ... + 1993934.

It is an arithmetic number, because the mean of its divisors is an integer number (5981790).

Almost surely, 2^19939295 is an apocalyptic number.

19939295 is a deficient number, since it is larger than the sum of its proper divisors (3987865).

19939295 is an equidigital number, since it uses as much as digits as its factorization.

19939295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3987864.

The product of its digits is 196830, while the sum is 47.

The square root of 19939295 is about 4465.3437717605. The cubic root of 19939295 is about 271.1668521295.

The spelling of 19939295 in words is "nineteen million, nine hundred thirty-nine thousand, two hundred ninety-five".