39876481 has 2 divisors, whose sum is σ = 39876482. Its totient is φ = 39876480.

The previous prime is 39876467. The next prime is 39876547. The reversal of 39876481 is 18467893.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20657025 + 19219456 = 4545^2 + 4384^2 .

It is an emirp because it is prime and its reverse (18467893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39876481 - 2²³ = 31487873 is a prime.

It is a super-2 number, since 2×39876481² = 3180267473886722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39876401) 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 as a sum of consecutive naturals, namely, 19938240 + 19938241.

It is an arithmetic number, because the mean of its divisors is an integer number (19938241).

Almost surely, 2^39876481 is an apocalyptic number.

It is an amenable number.

39876481 is a deficient number, since it is larger than the sum of its proper divisors (1).

39876481 is an equidigital number, since it uses as much as digits as its factorization.

39876481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 39876481 is about 6314.7827357717. The cubic root of 39876481 is about 341.6428021669.

The spelling of 39876481 in words is "thirty-nine million, eight hundred seventy-six thousand, four hundred eighty-one".