3899745461 has 4 divisors (see below), whose sum is σ = 3900380352. Its totient is φ = 3899110572.

The previous prime is 3899745457. The next prime is 3899745467. The reversal of 3899745461 is 1645479983.

3899745461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3899745461 - 2² = 3899745457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3899745397 and 3899745406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899745467) 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, 308141 + ... + 320546.

It is an arithmetic number, because the mean of its divisors is an integer number (975095088).

Almost surely, 2^3899745461 is an apocalyptic number.

It is an amenable number.

3899745461 is a deficient number, since it is larger than the sum of its proper divisors (634891).

3899745461 is an equidigital number, since it uses as much as digits as its factorization.

3899745461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634890.

The product of its digits is 6531840, while the sum is 56.

The square root of 3899745461 is about 62447.9420077235. The cubic root of 3899745461 is about 1574.0266714512.

The spelling of 3899745461 in words is "three billion, eight hundred ninety-nine million, seven hundred forty-five thousand, four hundred sixty-one".