80479249 has 2 divisors, whose sum is σ = 80479250. Its totient is φ = 80479248.

The previous prime is 80479237. The next prime is 80479279. The reversal of 80479249 is 94297408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78499600 + 1979649 = 8860^2 + 1407^2 .

It is a cyclic number.

It is not a de Polignac number, because 80479249 - 2⁷ = 80479121 is a prime.

It is a super-3 number, since 3×80479249³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (80479279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40239624 + 40239625.

It is an arithmetic number, because the mean of its divisors is an integer number (40239625).

Almost surely, 2^80479249 is an apocalyptic number.

It is an amenable number.

80479249 is a deficient number, since it is larger than the sum of its proper divisors (1).

80479249 is an equidigital number, since it uses as much as digits as its factorization.

80479249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 80479249 is about 8971.0227399110. The cubic root of 80479249 is about 431.7456511021.

The spelling of 80479249 in words is "eighty million, four hundred seventy-nine thousand, two hundred forty-nine".