39855379 has 6 divisors (see below), whose sum is σ = 40091324. Its totient is φ = 39620460.

The previous prime is 39855373. The next prime is 39855383. The reversal of 39855379 is 97355893.

It is not a de Polignac number, because 39855379 - 2³ = 39855371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39855371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114684 + ... + 115030.

Almost surely, 2^39855379 is an apocalyptic number.

39855379 is a deficient number, since it is larger than the sum of its proper divisors (235945).

39855379 is an frugal number, since it uses more digits than its factorization.

39855379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 678 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 49.

The square root of 39855379 is about 6313.1116733351. Note that the first 3 decimals coincide. The cubic root of 39855379 is about 341.5825275531.

The spelling of 39855379 in words is "thirty-nine million, eight hundred fifty-five thousand, three hundred seventy-nine".