79898491 has 4 divisors (see below), whose sum is σ = 79916400. Its totient is φ = 79880584.

The previous prime is 79898461. The next prime is 79898531. The reversal of 79898491 is 19489897.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 79898491 - 2¹⁷ = 79767419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79898461) 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, 3690 + ... + 13168.

It is an arithmetic number, because the mean of its divisors is an integer number (19979100).

Almost surely, 2^79898491 is an apocalyptic number.

79898491 is a deficient number, since it is larger than the sum of its proper divisors (17909).

79898491 is an equidigital number, since it uses as much as digits as its factorization.

79898491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17908.

The product of its digits is 1306368, while the sum is 55.

The square root of 79898491 is about 8938.5955831999. The cubic root of 79898491 is about 430.7046154447.

The spelling of 79898491 in words is "seventy-nine million, eight hundred ninety-eight thousand, four hundred ninety-one".