79890411 has 4 divisors (see below), whose sum is σ = 106520552. Its totient is φ = 53260272.

The previous prime is 79890367. The next prime is 79890439. The reversal of 79890411 is 11409897.

It is a happy number.

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

It is not a de Polignac number, because 79890411 - 2⁶ = 79890347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79890411.

It is not an unprimeable number, because it can be changed into a prime (79890211) 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, 13315066 + ... + 13315071.

It is an arithmetic number, because the mean of its divisors is an integer number (26630138).

Almost surely, 2^79890411 is an apocalyptic number.

79890411 is a deficient number, since it is larger than the sum of its proper divisors (26630141).

79890411 is a wasteful number, since it uses less digits than its factorization.

79890411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26630140.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 79890411 is about 8938.1435992045. The cubic root of 79890411 is about 430.6900961442.

The spelling of 79890411 in words is "seventy-nine million, eight hundred ninety thousand, four hundred eleven".