3939855007 has 16 divisors (see below), whose sum is σ = 4509425664. Its totient is φ = 3409308000.

The previous prime is 3939854981. The next prime is 3939855013. The reversal of 3939855007 is 7005589393.

It is a cyclic number.

It is not a de Polignac number, because 3939855007 - 2⁷ = 3939854879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939855707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73903 + ... + 115504.

It is an arithmetic number, because the mean of its divisors is an integer number (281839104).

Almost surely, 2^3939855007 is an apocalyptic number.

3939855007 is a deficient number, since it is larger than the sum of its proper divisors (569570657).

3939855007 is a wasteful number, since it uses less digits than its factorization.

3939855007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189510.

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

The square root of 3939855007 is about 62768.2643299940. The cubic root of 3939855007 is about 1579.4046529903.

The spelling of 3939855007 in words is "three billion, nine hundred thirty-nine million, eight hundred fifty-five thousand, seven".