139936437 has 16 divisors (see below), whose sum is σ = 211726080. Its totient is φ = 91305216.

The previous prime is 139936421. The next prime is 139936451. The reversal of 139936437 is 734639931.

It is a happy number.

It is not a de Polignac number, because 139936437 - 2⁴ = 139936421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139936392 and 139936401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139936417) 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 15 ways as a sum of consecutive naturals, for example, 53868 + ... + 56405.

It is an arithmetic number, because the mean of its divisors is an integer number (13232880).

Almost surely, 2^139936437 is an apocalyptic number.

It is an amenable number.

139936437 is a deficient number, since it is larger than the sum of its proper divisors (71789643).

139936437 is a wasteful number, since it uses less digits than its factorization.

139936437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110329 (or 110323 counting only the distinct ones).

The product of its digits is 367416, while the sum is 45.

The square root of 139936437 is about 11829.4732342569. The cubic root of 139936437 is about 519.1708148363.

The spelling of 139936437 in words is "one hundred thirty-nine million, nine hundred thirty-six thousand, four hundred thirty-seven".