19790079 has 8 divisors (see below), whose sum is σ = 27100080. Its totient is φ = 12836736.

The previous prime is 19790063. The next prime is 19790101. The reversal of 19790079 is 97009791.

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

It is not a de Polignac number, because 19790079 - 2⁴ = 19790063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19790079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19790579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89034 + ... + 89255.

It is an arithmetic number, because the mean of its divisors is an integer number (3387510).

Almost surely, 2^19790079 is an apocalyptic number.

19790079 is a deficient number, since it is larger than the sum of its proper divisors (7310001).

19790079 is a wasteful number, since it uses less digits than its factorization.

19790079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178329.

The product of its (nonzero) digits is 35721, while the sum is 42.

The square root of 19790079 is about 4448.6041631055. The cubic root of 19790079 is about 270.4887307202.

The spelling of 19790079 in words is "nineteen million, seven hundred ninety thousand, seventy-nine".