39748391 has 8 divisors (see below), whose sum is σ = 40146864. Its totient is φ = 39352320.

The previous prime is 39748367. The next prime is 39748411. The reversal of 39748391 is 19384793.

It is a happy number.

39748391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 39748391 - 2⁶ = 39748327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39748321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53861 + ... + 54593.

It is an arithmetic number, because the mean of its divisors is an integer number (5018358).

Almost surely, 2^39748391 is an apocalyptic number.

39748391 is a deficient number, since it is larger than the sum of its proper divisors (398473).

39748391 is a wasteful number, since it uses less digits than its factorization.

39748391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201.

The product of its digits is 163296, while the sum is 44.

The square root of 39748391 is about 6304.6325031678. The cubic root of 39748391 is about 341.2766049736.

The spelling of 39748391 in words is "thirty-nine million, seven hundred forty-eight thousand, three hundred ninety-one".