39750913 has 8 divisors (see below), whose sum is σ = 43227432. Its totient is φ = 36400896.

The previous prime is 39750911. The next prime is 39750917. The reversal of 39750913 is 31905793.

It can be written as a sum of positive squares in 4 ways, for example, as 31730689 + 8020224 = 5633^2 + 2832^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39750913 - 2¹ = 39750911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39750911) 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 in 7 ways as a sum of consecutive naturals, for example, 30970 + ... + 32227.

It is an arithmetic number, because the mean of its divisors is an integer number (5403429).

Almost surely, 2^39750913 is an apocalyptic number.

It is an amenable number.

39750913 is a deficient number, since it is larger than the sum of its proper divisors (3476519).

39750913 is a wasteful number, since it uses less digits than its factorization.

39750913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63251.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 39750913 is about 6304.8325116533. The cubic root of 39750913 is about 341.2838227198.

The spelling of 39750913 in words is "thirty-nine million, seven hundred fifty thousand, nine hundred thirteen".