39487471 has 2 divisors, whose sum is σ = 39487472. Its totient is φ = 39487470.

The previous prime is 39487463. The next prime is 39487477. The reversal of 39487471 is 17478493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39487471 - 2³ = 39487463 is a prime.

It is a super-3 number, since 3×39487471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39487477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19743735 + 19743736.

It is an arithmetic number, because the mean of its divisors is an integer number (19743736).

Almost surely, 2^39487471 is an apocalyptic number.

39487471 is a deficient number, since it is larger than the sum of its proper divisors (1).

39487471 is an equidigital number, since it uses as much as digits as its factorization.

39487471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 39487471 is about 6283.9057122143. The cubic root of 39487471 is about 340.5282187350.

The spelling of 39487471 in words is "thirty-nine million, four hundred eighty-seven thousand, four hundred seventy-one".