3965126794 has 4 divisors (see below), whose sum is σ = 5947690194. Its totient is φ = 1982563396.

The previous prime is 3965126771. The next prime is 3965126807. The reversal of 3965126794 is 4976215693.

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 only one way, i.e., 3858273225 + 106853569 = 62115^2 + 10337^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991281697 + ... + 991281700.

Almost surely, 2^3965126794 is an apocalyptic number.

3965126794 is a deficient number, since it is larger than the sum of its proper divisors (1982563400).

3965126794 is a wasteful number, since it uses less digits than its factorization.

3965126794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982563399.

The product of its digits is 2449440, while the sum is 52.

The square root of 3965126794 is about 62969.2527667273. The cubic root of 3965126794 is about 1582.7744333955.

The spelling of 3965126794 in words is "three billion, nine hundred sixty-five million, one hundred twenty-six thousand, seven hundred ninety-four".