80993739 has 8 divisors (see below), whose sum is σ = 109105360. Its totient is φ = 53438976.

The previous prime is 80993683. The next prime is 80993761. The reversal of 80993739 is 93739908.

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

It is not a de Polignac number, because 80993739 - 2⁷ = 80993611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80993779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138874 + ... + 139455.

It is an arithmetic number, because the mean of its divisors is an integer number (13638170).

Almost surely, 2^80993739 is an apocalyptic number.

80993739 is a deficient number, since it is larger than the sum of its proper divisors (28111621).

80993739 is a wasteful number, since it uses less digits than its factorization.

80993739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278429.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 80993739 is about 8999.6521599448. The cubic root of 80993739 is about 432.6637227500.

The spelling of 80993739 in words is "eighty million, nine hundred ninety-three thousand, seven hundred thirty-nine".