39948137 has 4 divisors (see below), whose sum is σ = 39989760. Its totient is φ = 39906516.

The previous prime is 39948101. The next prime is 39948151. The reversal of 39948137 is 73184993.

It is a happy number.

39948137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73184993 = 7 ⋅10454999.

It is a cyclic number.

It is not a de Polignac number, because 39948137 - 2⁸ = 39947881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39948037) 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 3 ways as a sum of consecutive naturals, for example, 19337 + ... + 21302.

It is an arithmetic number, because the mean of its divisors is an integer number (9997440).

Almost surely, 2^39948137 is an apocalyptic number.

It is an amenable number.

39948137 is a deficient number, since it is larger than the sum of its proper divisors (41623).

39948137 is an equidigital number, since it uses as much as digits as its factorization.

39948137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41622.

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

The square root of 39948137 is about 6320.4538602857. The cubic root of 39948137 is about 341.8473179373.

The spelling of 39948137 in words is "thirty-nine million, nine hundred forty-eight thousand, one hundred thirty-seven".