80490279 has 4 divisors (see below), whose sum is σ = 107320376. Its totient is φ = 53660184.

The previous prime is 80490269. The next prime is 80490301. The reversal of 80490279 is 97209408.

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

It is not a de Polignac number, because 80490279 - 2⁹ = 80489767 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 (80490269) 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, 13415044 + ... + 13415049.

It is an arithmetic number, because the mean of its divisors is an integer number (26830094).

Almost surely, 2^80490279 is an apocalyptic number.

80490279 is a deficient number, since it is larger than the sum of its proper divisors (26830097).

80490279 is a wasteful number, since it uses less digits than its factorization.

80490279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26830096.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 80490279 is about 8971.6374759572. The cubic root of 80490279 is about 431.7653743519.

The spelling of 80490279 in words is "eighty million, four hundred ninety thousand, two hundred seventy-nine".