3967634465 has 4 divisors (see below), whose sum is σ = 4761161364. Its totient is φ = 3174107568.

The previous prime is 3967634453. The next prime is 3967634483. The reversal of 3967634465 is 5644367693.

It is a happy number.

3967634465 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2526369169 + 1441265296 = 50263^2 + 37964^2 .

It is a cyclic number.

It is not a de Polignac number, because 3967634465 - 2²⁴ = 3950857249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396763442 + ... + 396763451.

It is an arithmetic number, because the mean of its divisors is an integer number (1190290341).

Almost surely, 2^3967634465 is an apocalyptic number.

It is an amenable number.

3967634465 is a deficient number, since it is larger than the sum of its proper divisors (793526899).

3967634465 is an equidigital number, since it uses as much as digits as its factorization.

3967634465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793526898.

The product of its digits is 9797760, while the sum is 53.

The square root of 3967634465 is about 62989.1614883069. The cubic root of 3967634465 is about 1583.1080285383.

The spelling of 3967634465 in words is "three billion, nine hundred sixty-seven million, six hundred thirty-four thousand, four hundred sixty-five".