79419887 has 4 divisors (see below), whose sum is σ = 79461096. Its totient is φ = 79378680.

The previous prime is 79419883. The next prime is 79419931. The reversal of 79419887 is 78891497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78891497 = 31 ⋅2544887.

It is a cyclic number.

It is not a de Polignac number, because 79419887 - 2² = 79419883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79419883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17564 + ... + 21617.

It is an arithmetic number, because the mean of its divisors is an integer number (19865274).

Almost surely, 2^79419887 is an apocalyptic number.

79419887 is a deficient number, since it is larger than the sum of its proper divisors (41209).

79419887 is a wasteful number, since it uses less digits than its factorization.

79419887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41208.

The product of its digits is 1016064, while the sum is 53.

The square root of 79419887 is about 8911.7836037462. The cubic root of 79419887 is about 429.8428973591.

The spelling of 79419887 in words is "seventy-nine million, four hundred nineteen thousand, eight hundred eighty-seven".