80840929 has 8 divisors (see below), whose sum is σ = 90844992. Its totient is φ = 71377680.

The previous prime is 80840923. The next prime is 80840939. The reversal of 80840929 is 92904808.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80840929 - 2²³ = 72452321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80840891 and 80840900.

It is not an unprimeable number, because it can be changed into a prime (80840923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134887 + ... + 135484.

It is an arithmetic number, because the mean of its divisors is an integer number (11355624).

Almost surely, 2^80840929 is an apocalyptic number.

It is an amenable number.

80840929 is a deficient number, since it is larger than the sum of its proper divisors (10004063).

80840929 is a wasteful number, since it uses less digits than its factorization.

80840929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270407.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 80840929 is about 8991.1583792079. The cubic root of 80840929 is about 432.3914508121.

The spelling of 80840929 in words is "eighty million, eight hundred forty thousand, nine hundred twenty-nine".