80140437 has 12 divisors (see below), whose sum is σ = 124663084. Its totient is φ = 49317120.

The previous prime is 80140393. The next prime is 80140439. The reversal of 80140437 is 73404108.

It can be written as a sum of positive squares in 2 ways, for example, as 41873841 + 38266596 = 6471^2 + 6186^2 .

It is not a de Polignac number, because 80140437 - 2¹¹ = 80138389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80140437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80140439) 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 11 ways as a sum of consecutive naturals, for example, 342364 + ... + 342597.

Almost surely, 2^80140437 is an apocalyptic number.

It is an amenable number.

80140437 is a deficient number, since it is larger than the sum of its proper divisors (44522647).

80140437 is a wasteful number, since it uses less digits than its factorization.

80140437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684980 (or 684977 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 80140437 is about 8952.1191345960. The cubic root of 80140437 is about 431.1389258992.

The spelling of 80140437 in words is "eighty million, one hundred forty thousand, four hundred thirty-seven".