39281481 has 12 divisors (see below), whose sum is σ = 57188352. Its totient is φ = 25980696.

The previous prime is 39281471. The next prime is 39281491. The reversal of 39281481 is 18418293.

39281481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39281471) and next prime (39281491).

It is not a de Polignac number, because 39281481 - 2⁵ = 39281449 is a prime.

It is a super-2 number, since 2×39281481² = 3086069499106722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (39281461) 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 11 ways as a sum of consecutive naturals, for example, 16041 + ... + 18326.

It is an arithmetic number, because the mean of its divisors is an integer number (4765696).

Almost surely, 2^39281481 is an apocalyptic number.

It is an amenable number.

39281481 is a deficient number, since it is larger than the sum of its proper divisors (17906871).

39281481 is a wasteful number, since it uses less digits than its factorization.

39281481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34500 (or 34497 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 39281481 is about 6267.4939968061. The cubic root of 39281481 is about 339.9350539156.

The spelling of 39281481 in words is "thirty-nine million, two hundred eighty-one thousand, four hundred eighty-one".