36739921 has 2 divisors, whose sum is σ = 36739922. Its totient is φ = 36739920.

The previous prime is 36739903. The next prime is 36739933. The reversal of 36739921 is 12993763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36469521 + 270400 = 6039^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 36739921 - 2¹¹ = 36737873 is a prime.

It is not a weakly prime, because it can be changed into another prime (36739981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18369960 + 18369961.

It is an arithmetic number, because the mean of its divisors is an integer number (18369961).

Almost surely, 2^36739921 is an apocalyptic number.

It is an amenable number.

36739921 is a deficient number, since it is larger than the sum of its proper divisors (1).

36739921 is an equidigital number, since it uses as much as digits as its factorization.

36739921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 36739921 is about 6061.3464675763. The cubic root of 36739921 is about 332.4395910380.

The spelling of 36739921 in words is "thirty-six million, seven hundred thirty-nine thousand, nine hundred twenty-one".