80897829 has 4 divisors (see below), whose sum is σ = 107863776. Its totient is φ = 53931884.

The previous prime is 80897819. The next prime is 80897867. The reversal of 80897829 is 92879808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80897829 - 2⁴ = 80897813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80897809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13482969 + ... + 13482974.

It is an arithmetic number, because the mean of its divisors is an integer number (26965944).

Almost surely, 2^80897829 is an apocalyptic number.

It is an amenable number.

80897829 is a deficient number, since it is larger than the sum of its proper divisors (26965947).

80897829 is a wasteful number, since it uses less digits than its factorization.

80897829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26965946.

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 80897829 is about 8994.3220422664. The cubic root of 80897829 is about 432.4928734612.

The spelling of 80897829 in words is "eighty million, eight hundred ninety-seven thousand, eight hundred twenty-nine".