36139993 has 2 divisors, whose sum is σ = 36139994. Its totient is φ = 36139992.

The previous prime is 36139981. The next prime is 36140021. The reversal of 36139993 is 39993163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34257609 + 1882384 = 5853^2 + 1372^2 .

It is a cyclic number.

It is not a de Polignac number, because 36139993 - 2¹³ = 36131801 is a prime.

It is not a weakly prime, because it can be changed into another prime (36134993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18069996 + 18069997.

It is an arithmetic number, because the mean of its divisors is an integer number (18069997).

Almost surely, 2^36139993 is an apocalyptic number.

It is an amenable number.

36139993 is a deficient number, since it is larger than the sum of its proper divisors (1).

36139993 is an equidigital number, since it uses as much as digits as its factorization.

36139993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 118098, while the sum is 43.

The square root of 36139993 is about 6011.6547638733. The cubic root of 36139993 is about 330.6201774948.

The spelling of 36139993 in words is "thirty-six million, one hundred thirty-nine thousand, nine hundred ninety-three".