39278485 has 4 divisors (see below), whose sum is σ = 47134188. Its totient is φ = 31422784.

The previous prime is 39278467. The next prime is 39278521. The reversal of 39278485 is 58487293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58487293 = 17 ⋅3440429.

It can be written as a sum of positive squares in 2 ways, for example, as 11336689 + 27941796 = 3367^2 + 5286^2 .

It is a cyclic number.

It is not a de Polignac number, because 39278485 - 2⁷ = 39278357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3927844 + ... + 3927853.

It is an arithmetic number, because the mean of its divisors is an integer number (11783547).

Almost surely, 2^39278485 is an apocalyptic number.

It is an amenable number.

39278485 is a deficient number, since it is larger than the sum of its proper divisors (7855703).

39278485 is an equidigital number, since it uses as much as digits as its factorization.

39278485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7855702.

The product of its digits is 483840, while the sum is 46.

The square root of 39278485 is about 6267.2549812498. The cubic root of 39278485 is about 339.9264114095.

The spelling of 39278485 in words is "thirty-nine million, two hundred seventy-eight thousand, four hundred eighty-five".