80249217 has 12 divisors (see below), whose sum is σ = 112928400. Its totient is φ = 50683032.

The previous prime is 80249209. The next prime is 80249219. The reversal of 80249217 is 71294208.

It is a happy number.

It is not a de Polignac number, because 80249217 - 2³ = 80249209 is a prime.

It is a super-2 number, since 2×80249217² = 12879873658226178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80249219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35967 + ... + 38132.

It is an arithmetic number, because the mean of its divisors is an integer number (9410700).

Almost surely, 2^80249217 is an apocalyptic number.

It is an amenable number.

80249217 is a deficient number, since it is larger than the sum of its proper divisors (32679183).

80249217 is a wasteful number, since it uses less digits than its factorization.

80249217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74140 (or 74121 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 80249217 is about 8958.1927306796. The cubic root of 80249217 is about 431.3339089824. Note that the first 3 decimals are identical.

The spelling of 80249217 in words is "eighty million, two hundred forty-nine thousand, two hundred seventeen".