80249929 has 4 divisors (see below), whose sum is σ = 82418884. Its totient is φ = 78080976.

The previous prime is 80249927. The next prime is 80249933. The reversal of 80249929 is 92994208.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63234304 + 17015625 = 7952^2 + 4125^2 .

It is a cyclic number.

It is not a de Polignac number, because 80249929 - 2¹ = 80249927 is a prime.

It is a super-2 number, since 2×80249929² = 12880102209010082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80249927) 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, 1084422 + ... + 1084495.

It is an arithmetic number, because the mean of its divisors is an integer number (20604721).

Almost surely, 2^80249929 is an apocalyptic number.

It is an amenable number.

80249929 is a deficient number, since it is larger than the sum of its proper divisors (2168955).

80249929 is a wasteful number, since it uses less digits than its factorization.

80249929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168954.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 80249929 is about 8958.2324707500. The cubic root of 80249929 is about 431.3351846287.

The spelling of 80249929 in words is "eighty million, two hundred forty-nine thousand, nine hundred twenty-nine".