3967455949 has 4 divisors (see below), whose sum is σ = 4176269440. Its totient is φ = 3758642460.

The previous prime is 3967455917. The next prime is 3967455953. The reversal of 3967455949 is 9495547693.

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 3967455949 - 2⁵ = 3967455917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967455959) 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, 104406717 + ... + 104406754.

It is an arithmetic number, because the mean of its divisors is an integer number (1044067360).

Almost surely, 2^3967455949 is an apocalyptic number.

It is an amenable number.

3967455949 is a deficient number, since it is larger than the sum of its proper divisors (208813491).

3967455949 is a wasteful number, since it uses less digits than its factorization.

3967455949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208813490.

The product of its digits is 36741600, while the sum is 61.

The square root of 3967455949 is about 62987.7444349296. The cubic root of 3967455949 is about 1583.0842852261.

The spelling of 3967455949 in words is "three billion, nine hundred sixty-seven million, four hundred fifty-five thousand, nine hundred forty-nine".