3906199061 has 4 divisors (see below), whose sum is σ = 3911028300. Its totient is φ = 3901369824.

The previous prime is 3906199019. The next prime is 3906199067. The reversal of 3906199061 is 1609916093.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3714902500 + 191296561 = 60950^2 + 13831^2 .

It is a cyclic number.

It is not a de Polignac number, because 3906199061 - 2²⁶ = 3839090197 is a prime.

It is a super-2 number, since 2×3906199061² = 30516782208314563442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3906199067) 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, 2413406 + ... + 2415023.

It is an arithmetic number, because the mean of its divisors is an integer number (977757075).

Almost surely, 2^3906199061 is an apocalyptic number.

It is an amenable number.

3906199061 is a deficient number, since it is larger than the sum of its proper divisors (4829239).

3906199061 is an equidigital number, since it uses as much as digits as its factorization.

3906199061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829238.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 3906199061 is about 62499.5924866715. The cubic root of 3906199061 is about 1574.8944665662.

The spelling of 3906199061 in words is "three billion, nine hundred six million, one hundred ninety-nine thousand, sixty-one".