79001819 has 4 divisors (see below), whose sum is σ = 85078896. Its totient is φ = 72924744.

The previous prime is 79001779. The next prime is 79001827. The reversal of 79001819 is 91810097.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91810097 = 379 ⋅242243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79001819 is a prime.

It is a super-2 number, since 2×79001819² = 12482574810617522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79001119) 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, 3038519 + ... + 3038544.

It is an arithmetic number, because the mean of its divisors is an integer number (21269724).

Almost surely, 2^79001819 is an apocalyptic number.

79001819 is a deficient number, since it is larger than the sum of its proper divisors (6077077).

79001819 is a wasteful number, since it uses less digits than its factorization.

79001819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6077076.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 79001819 is about 8888.2967434712. The cubic root of 79001819 is about 429.0873359426.

The spelling of 79001819 in words is "seventy-nine million, one thousand, eight hundred nineteen".