39948481 has 4 divisors (see below), whose sum is σ = 40429872. Its totient is φ = 39467092.

The previous prime is 39948439. The next prime is 39948509. The reversal of 39948481 is 18484993.

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.

It is a cyclic number.

It is not a de Polignac number, because 39948481 - 2⁷ = 39948353 is a prime.

It is a super-2 number, since 2×39948481² = 3191762268414722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39948421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240571 + ... + 240736.

It is an arithmetic number, because the mean of its divisors is an integer number (10107468).

Almost surely, 2^39948481 is an apocalyptic number.

It is an amenable number.

39948481 is a deficient number, since it is larger than the sum of its proper divisors (481391).

39948481 is an equidigital number, since it uses as much as digits as its factorization.

39948481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481390.

The product of its digits is 248832, while the sum is 46.

The square root of 39948481 is about 6320.4810734627. The cubic root of 39948481 is about 341.8482991690.

The spelling of 39948481 in words is "thirty-nine million, nine hundred forty-eight thousand, four hundred eighty-one".