3971825049 has 4 divisors (see below), whose sum is σ = 5295766736. Its totient is φ = 2647883364.

The previous prime is 3971825023. The next prime is 3971825063. The reversal of 3971825049 is 9405281793.

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 not a de Polignac number, because 3971825049 - 2⁵ = 3971825017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3971824989 and 3971825007.

It is not an unprimeable number, because it can be changed into a prime (3971825069) 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, 661970839 + ... + 661970844.

It is an arithmetic number, because the mean of its divisors is an integer number (1323941684).

Almost surely, 2^3971825049 is an apocalyptic number.

It is an amenable number.

3971825049 is a deficient number, since it is larger than the sum of its proper divisors (1323941687).

3971825049 is a wasteful number, since it uses less digits than its factorization.

3971825049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323941686.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 3971825049 is about 63022.4170355279. The cubic root of 3971825049 is about 1583.6651878027.

The spelling of 3971825049 in words is "three billion, nine hundred seventy-one million, eight hundred twenty-five thousand, forty-nine".