139993037 has 2 divisors, whose sum is σ = 139993038. Its totient is φ = 139993036.

The previous prime is 139993031. The next prime is 139993067. The reversal of 139993037 is 730399931.

It is a happy number.

139993037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123232201 + 16760836 = 11101^2 + 4094^2 .

It is an emirp because it is prime and its reverse (730399931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139993037 - 2¹⁸ = 139730893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139993031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69996518 + 69996519.

It is an arithmetic number, because the mean of its divisors is an integer number (69996519).

Almost surely, 2^139993037 is an apocalyptic number.

It is an amenable number.

139993037 is a deficient number, since it is larger than the sum of its proper divisors (1).

139993037 is an equidigital number, since it uses as much as digits as its factorization.

139993037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137781, while the sum is 44.

The square root of 139993037 is about 11831.8653220868. The cubic root of 139993037 is about 519.2408016290.

The spelling of 139993037 in words is "one hundred thirty-nine million, nine hundred ninety-three thousand, thirty-seven".