3900005019 has 6 divisors (see below), whose sum is σ = 5633340596. Its totient is φ = 2600003340.

The previous prime is 3900004991. The next prime is 3900005023. The reversal of 3900005019 is 9105000093.

It is not a de Polignac number, because 3900005019 - 2⁵ = 3900004987 is a prime.

It is a super-2 number, since 2×3900005019² = 30420078296450380722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3900004983 and 3900005001.

It is not an unprimeable number, because it can be changed into a prime (3900005029) 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, 216666937 + ... + 216666954.

Almost surely, 2^3900005019 is an apocalyptic number.

3900005019 is a deficient number, since it is larger than the sum of its proper divisors (1733335577).

3900005019 is a wasteful number, since it uses less digits than its factorization.

3900005019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433333897 (or 433333894 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 3900005019 is about 62450.0201681313. The cubic root of 3900005019 is about 1574.0615918629.

The spelling of 3900005019 in words is "three billion, nine hundred million, five thousand, nineteen".