19975039 has 4 divisors (see below), whose sum is σ = 22828624. Its totient is φ = 17121456.

The previous prime is 19975031. The next prime is 19975049. The reversal of 19975039 is 93057991.

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 19975039 - 2³ = 19975031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19974986 and 19975004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19975031) 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, 1426782 + ... + 1426795.

It is an arithmetic number, because the mean of its divisors is an integer number (5707156).

Almost surely, 2^19975039 is an apocalyptic number.

19975039 is a deficient number, since it is larger than the sum of its proper divisors (2853585).

19975039 is an equidigital number, since it uses as much as digits as its factorization.

19975039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853584.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 19975039 is about 4469.3443590755. The cubic root of 19975039 is about 271.3287903516.

The spelling of 19975039 in words is "nineteen million, nine hundred seventy-five thousand, thirty-nine".