39860939 has 4 divisors (see below), whose sum is σ = 39931320. Its totient is φ = 39790560.

The previous prime is 39860923. The next prime is 39860959. The reversal of 39860939 is 93906893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93906893 = 47 ⋅1998019.

It is a cyclic number.

It is not a de Polignac number, because 39860939 - 2⁴ = 39860923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39860893 and 39860902.

It is not an unprimeable number, because it can be changed into a prime (39860959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34334 + ... + 35475.

It is an arithmetic number, because the mean of its divisors is an integer number (9982830).

Almost surely, 2^39860939 is an apocalyptic number.

39860939 is a deficient number, since it is larger than the sum of its proper divisors (70381).

39860939 is an equidigital number, since it uses as much as digits as its factorization.

39860939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70380.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 39860939 is about 6313.5520113483. The cubic root of 39860939 is about 341.5984109009.

The spelling of 39860939 in words is "thirty-nine million, eight hundred sixty thousand, nine hundred thirty-nine".