80397938 has 4 divisors (see below), whose sum is σ = 120596910. Its totient is φ = 40198968.

The previous prime is 80397931. The next prime is 80397953. The reversal of 80397938 is 83979308.

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., 78198649 + 2199289 = 8843^2 + 1483^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80397892 and 80397901.

It is not an unprimeable number, because it can be changed into a prime (80397931) 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 as a sum of consecutive naturals, namely, 20099483 + ... + 20099486.

Almost surely, 2^80397938 is an apocalyptic number.

80397938 is a deficient number, since it is larger than the sum of its proper divisors (40198972).

80397938 is a wasteful number, since it uses less digits than its factorization.

80397938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40198971.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 80397938 is about 8966.4897256396. The cubic root of 80397938 is about 431.6001995290.

The spelling of 80397938 in words is "eighty million, three hundred ninety-seven thousand, nine hundred thirty-eight".