80491437 has 12 divisors (see below), whose sum is σ = 125209084. Its totient is φ = 49533120.

The previous prime is 80491417. The next prime is 80491451. The reversal of 80491437 is 73419408.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34644996 + 45846441 = 5886^2 + 6771^2 .

It is not a de Polignac number, because 80491437 - 2⁶ = 80491373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80491417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343864 + ... + 344097.

Almost surely, 2^80491437 is an apocalyptic number.

It is an amenable number.

80491437 is a deficient number, since it is larger than the sum of its proper divisors (44717647).

80491437 is a wasteful number, since it uses less digits than its factorization.

80491437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687980 (or 687977 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80491437 is about 8971.7020124389. The cubic root of 80491437 is about 431.7674449204.

The spelling of 80491437 in words is "eighty million, four hundred ninety-one thousand, four hundred thirty-seven".