80779834 has 4 divisors (see below), whose sum is σ = 121169754. Its totient is φ = 40389916.

The previous prime is 80779781. The next prime is 80779837. The reversal of 80779834 is 43897708.

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

It can be written as a sum of positive squares in only one way, i.e., 80048809 + 731025 = 8947^2 + 855^2 .

It is not an unprimeable number, because it can be changed into a prime (80779837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20194957 + ... + 20194960.

Almost surely, 2^80779834 is an apocalyptic number.

80779834 is a deficient number, since it is larger than the sum of its proper divisors (40389920).

80779834 is a wasteful number, since it uses less digits than its factorization.

80779834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40389919.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 80779834 is about 8987.7602326720. The cubic root of 80779834 is about 432.2824976963.

The spelling of 80779834 in words is "eighty million, seven hundred seventy-nine thousand, eight hundred thirty-four".