39689073 has 6 divisors (see below), whose sum is σ = 57328674. Its totient is φ = 26459376.

The previous prime is 39689063. The next prime is 39689077. The reversal of 39689073 is 37098693.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39652209 + 36864 = 6297^2 + 192^2 .

It is not a de Polignac number, because 39689073 - 2¹³ = 39680881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39689077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2204940 + ... + 2204957.

It is an arithmetic number, because the mean of its divisors is an integer number (9554779).

Almost surely, 2^39689073 is an apocalyptic number.

It is an amenable number.

39689073 is a deficient number, since it is larger than the sum of its proper divisors (17639601).

39689073 is a wasteful number, since it uses less digits than its factorization.

39689073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409903 (or 4409900 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 39689073 is about 6299.9264281418. The cubic root of 39689073 is about 341.1067538700.

It can be divided in two parts, 3968 and 9073, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 39689073 in words is "thirty-nine million, six hundred eighty-nine thousand, seventy-three".